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2741
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costa
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/**
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* '$RCSfile$'
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* Copyright: 2005 University of New Mexico and the
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* Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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*
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.advancedsearch;
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import java.io.Reader;
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import java.io.StringReader;
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import java.util.ArrayList;
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import edu.ucsb.nceas.metacat.client.*;
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import edu.ucsb.nceas.utilities.*;
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/**
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* @author dcosta
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*
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* AdvancedSearch class constructs queries that use the pathquery feature of
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* Metacat. It can execute either an advanced search, where the user fills in
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* fields in a web form, or a simple search on a string.
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*/
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public class AdvancedSearch {
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// Object variables
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private AdvancedSearchBean advancedSearchBean = null;
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private String caseSensitive;
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private final String globalOperator;
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private boolean hasSubjectSearch = false;
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private boolean hasAuthorSearch = false;
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private boolean hasSpatialSearch = false;
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private boolean hasTaxonomicSearch = false;
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private boolean hasTemporalSearch = false;
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private boolean hasSiteFilter = false;
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private int indentLevel = 2;
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private boolean isCaseSensitive = false;
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private AdvancedSearchPathQuery pathQuery;
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private AdvancedSearchQueryGroup queryGroup;
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private String queryString;
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private String site;
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private final String title = "Advanced Search";
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/**
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* Constructor. Used when the user has filled in an Advanced Search form.
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* The property values are contained in the advancedSearchBean object.
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* For a simple search, the advancedSearchBean object is passed as null.
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*
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* @param advancedSearchBean An AdvancedSearch bean.
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*/
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public AdvancedSearch(final AdvancedSearchBean advancedSearchBean) {
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int allAny = AdvancedSearchBean.MATCH_ALL;
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String indent = getIndent(indentLevel * 1);
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if (advancedSearchBean != null) {
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allAny = advancedSearchBean.getFormAllAny();
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this.isCaseSensitive = advancedSearchBean.isCaseSensitive();
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site = advancedSearchBean.getSiteValue();
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}
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if (allAny == AdvancedSearchBean.MATCH_ALL) {
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globalOperator = "INTERSECT";
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}
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else {
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globalOperator = "UNION";
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}
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if (isCaseSensitive == true) {
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this.caseSensitive = "true";
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}
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else {
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this.caseSensitive = "false";
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}
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this.queryGroup = new AdvancedSearchQueryGroup(globalOperator, indent);
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this.pathQuery = new AdvancedSearchPathQuery(title, queryGroup, indent);
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this.advancedSearchBean = advancedSearchBean;
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}
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/**
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* Adds a string to an ArrayList of terms. An auxiliary method to the
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* parseTermsAdvanced() method.
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*
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* @param terms ArrayList of strings.
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* @param term the new string to add to the ArrayList, but only if
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* it isn't an empty string.
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*/
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private void addTerm(ArrayList terms, final StringBuffer term) {
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final String s = term.toString().trim();
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if (s.length() > 0) {
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terms.add(s);
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}
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}
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/**
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* A full subject query searches the title, abstract, and keyword sections of
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* the document. Individual searches on these sections is also supported.
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*/
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private void buildQuerySubject() {
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int allAny = advancedSearchBean.getSubjectAllAny();
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String emlField;
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String indent;
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final String innerOperator = "UNION";
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AdvancedSearchQueryGroup innerQuery = null;
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final String outerOperator;
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AdvancedSearchQueryGroup outerQuery;
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AdvancedSearchQueryTerm qt;
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String searchMode;
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final String subjectField = advancedSearchBean.getSubjectField();
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final int subjectQueryType = advancedSearchBean.getSubjectQueryType();
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String term;
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ArrayList terms;
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String value = advancedSearchBean.getSubjectValue();
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if ((value != null) && (!(value.equals("")))) {
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hasSubjectSearch = true;
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if (allAny == AdvancedSearchBean.MATCH_ALL) {
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outerOperator = "INTERSECT";
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}
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else {
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outerOperator = "UNION";
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}
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indent = getIndent(indentLevel * 2);
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outerQuery = new AdvancedSearchQueryGroup(outerOperator, indent);
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terms = parseTermsAdvanced(value);
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searchMode = metacatSearchMode(subjectQueryType);
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for (int i = 0; i < terms.size(); i++) {
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term = (String) terms.get(i);
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indent = getIndent(indentLevel * 3);
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innerQuery = new AdvancedSearchQueryGroup(innerOperator, indent);
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indent = getIndent(indentLevel * 4);
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if (subjectField.equals("ALL") || subjectField.equals("TITLE")) {
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emlField = "dataset/title";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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term, indent);
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innerQuery.addQueryTerm(qt);
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}
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if (subjectField.equals("ALL") || subjectField.equals("ABSTRACT")) {
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emlField = "dataset/abstract/para";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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term, indent);
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innerQuery.addQueryTerm(qt);
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emlField = "dataset/abstract/section/para";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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term, indent);
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innerQuery.addQueryTerm(qt);
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}
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if (subjectField.equals("ALL") || subjectField.equals("KEYWORDS")) {
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emlField = "keywordSet/keyword";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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term, indent);
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innerQuery.addQueryTerm(qt);
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}
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outerQuery.addQueryGroup(innerQuery);
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}
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// Minimize the number of query groups that get created, depending on
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// which criteria the user specified.
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//
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if (terms.size() > 1) {
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queryGroup.addQueryGroup(outerQuery);
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}
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else if (terms.size() == 1){
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queryGroup.addQueryGroup(innerQuery);
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}
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}
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}
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/**
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* An author query will search the creator/individualName/surName field, the
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* creator/organizationName field, or an intersection of both fields.
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*/
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private void buildQueryAuthor() {
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boolean addQueryGroup = false;
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final int creatorSurnameQueryType =
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advancedSearchBean.getCreatorSurnameQueryType();
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final int creatorOrganizationQueryType =
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advancedSearchBean.getCreatorOrganizationQueryType();
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String emlField;
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String indent = getIndent(indentLevel * 2);
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AdvancedSearchQueryGroup qg =
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new AdvancedSearchQueryGroup(globalOperator, indent);
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AdvancedSearchQueryTerm qt;
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String searchMode;
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String value = advancedSearchBean.getCreatorSurname();
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indent = getIndent(indentLevel * 3);
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if ((value != null) && (!(value.equals("")))) {
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emlField = "dataset/creator/individualName/surName";
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searchMode = metacatSearchMode(creatorSurnameQueryType);
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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value, indent);
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qg.addQueryTerm(qt);
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addQueryGroup = true;
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}
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value = advancedSearchBean.getCreatorOrganization();
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if ((value != null) && (!(value.equals("")))) {
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emlField = "creator/organizationName";
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searchMode = metacatSearchMode(creatorOrganizationQueryType);
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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value, indent);
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qg.addQueryTerm(qt);
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addQueryGroup = true;
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}
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if (addQueryGroup) {
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hasAuthorSearch = true;
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queryGroup.addQueryGroup(qg);
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}
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}
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/**
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* Two kinds of spatial searches are supported. The first is on a specific
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* named location. The second is on north/south/east/west bounding
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* coordinates. An intersection of both searches is done if the user
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* specifies search values for a named location as well as one or more
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* bounding coordinates.
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*/
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private void buildQuerySpatialCriteria() {
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boolean addBoundingValues = false;
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boolean addGeographicDescription = false;
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final boolean boundaryContained = advancedSearchBean.isBoundaryContained();
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String emlField;
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final String operator = "INTERSECT";
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String indent = getIndent(indentLevel * 2);
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AdvancedSearchQueryGroup qgBounding;
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AdvancedSearchQueryGroup qgGeographicDescription;
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AdvancedSearchQueryGroup qgSpatial;
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AdvancedSearchQueryTerm qt;
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String searchMode;
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String value, northValue, southValue, eastValue, westValue;
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qgSpatial = new AdvancedSearchQueryGroup(globalOperator, indent);
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indent = getIndent(indentLevel * 3);
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qgBounding = new AdvancedSearchQueryGroup(operator, indent);
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qgGeographicDescription = new AdvancedSearchQueryGroup(operator, indent);
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indent = getIndent(indentLevel * 4);
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/* Check whether user specified a named location. */
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value = advancedSearchBean.getLocationName();
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if ((value != null) && (!(value.equals("")))) {
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searchMode = "contains";
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emlField = "geographicCoverage/geographicDescription";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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value, indent);
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qgGeographicDescription.addQueryTerm(qt);
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addGeographicDescription = true;
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}
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/*
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* If the user selects the boundaryContained checkbox, use the following
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* logical expression. N, S, E, and W are the boundaries of the bounding
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* box, while N', S', E', and W' are the boundaries specified in a given
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* EML document:
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* (N' <= N) && (S' >= S) && (E' <= E) && (W' >= W)
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*/
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if (boundaryContained) {
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northValue = advancedSearchBean.getNorthBound();
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if ((northValue != null) && (!(northValue.equals("")))) {
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emlField =
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"geographicCoverage/boundingCoordinates/northBoundingCoordinate";
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searchMode = "less-than-equals";
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qt=new AdvancedSearchQueryTerm(searchMode,caseSensitive,emlField,
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northValue, indent);
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qgBounding.addQueryTerm(qt);
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addBoundingValues = true;
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}
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southValue = advancedSearchBean.getSouthBound();
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if ((southValue != null) && (!(southValue.equals("")))) {
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emlField =
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"geographicCoverage/boundingCoordinates/southBoundingCoordinate";
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searchMode = "greater-than-equals";
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qt=new AdvancedSearchQueryTerm(searchMode,caseSensitive,emlField,
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southValue, indent);
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qgBounding.addQueryTerm(qt);
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addBoundingValues = true;
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}
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eastValue = advancedSearchBean.getEastBound();
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if ((eastValue != null) && (!(eastValue.equals("")))) {
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emlField =
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"geographicCoverage/boundingCoordinates/eastBoundingCoordinate";
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searchMode = "less-than-equals";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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eastValue, indent);
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qgBounding.addQueryTerm(qt);
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addBoundingValues = true;
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}
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westValue = advancedSearchBean.getWestBound();
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if ((westValue != null) && (!(westValue.equals("")))) {
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emlField =
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"geographicCoverage/boundingCoordinates/westBoundingCoordinate";
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searchMode = "greater-than-equals";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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westValue, indent);
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qgBounding.addQueryTerm(qt);
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addBoundingValues = true;
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}
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}
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/*
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* Else, if the user does not select the boundaryContained checkbox, use the
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* following logical expression. N, S, E, and W are the boundaries of the
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* bounding box, while N', S', E', and W' are the boundaries specified in a
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* given EML document:
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* (N' > S) && (S' < N) && (E' > W) && (W' < E)
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*/
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else {
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northValue = advancedSearchBean.getNorthBound();
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if ((northValue != null) && (!(northValue.equals("")))) {
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emlField =
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"geographicCoverage/boundingCoordinates/southBoundingCoordinate";
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searchMode = "less-than";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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northValue, indent);
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qgBounding.addQueryTerm(qt);
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addBoundingValues = true;
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}
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southValue = advancedSearchBean.getSouthBound();
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if ((southValue != null) && (!(southValue.equals("")))) {
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emlField =
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360 |
|
|
"geographicCoverage/boundingCoordinates/northBoundingCoordinate";
|
361 |
|
|
searchMode = "greater-than";
|
362 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
363 |
|
|
southValue, indent);
|
364 |
|
|
qgBounding.addQueryTerm(qt);
|
365 |
|
|
addBoundingValues = true;
|
366 |
|
|
}
|
367 |
|
|
|
368 |
|
|
eastValue = advancedSearchBean.getEastBound();
|
369 |
|
|
if ((eastValue != null) && (!(eastValue.equals("")))) {
|
370 |
|
|
emlField =
|
371 |
|
|
"geographicCoverage/boundingCoordinates/westBoundingCoordinate";
|
372 |
|
|
searchMode = "less-than";
|
373 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
374 |
|
|
eastValue, indent);
|
375 |
|
|
qgBounding.addQueryTerm(qt);
|
376 |
|
|
addBoundingValues = true;
|
377 |
|
|
}
|
378 |
|
|
|
379 |
|
|
westValue = advancedSearchBean.getWestBound();
|
380 |
|
|
if ((westValue != null) && (!(westValue.equals("")))) {
|
381 |
|
|
emlField =
|
382 |
|
|
"geographicCoverage/boundingCoordinates/eastBoundingCoordinate";
|
383 |
|
|
searchMode = "greater-than";
|
384 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
385 |
|
|
westValue, indent);
|
386 |
|
|
qgBounding.addQueryTerm(qt);
|
387 |
|
|
addBoundingValues = true;
|
388 |
|
|
}
|
389 |
|
|
}
|
390 |
|
|
|
391 |
|
|
// Minimize the number of query groups that get created, depending on
|
392 |
|
|
// which criteria the user specified.
|
393 |
|
|
//
|
394 |
|
|
if (addBoundingValues || addGeographicDescription) {
|
395 |
|
|
hasSpatialSearch = true;
|
396 |
|
|
|
397 |
|
|
if (addBoundingValues && addGeographicDescription) {
|
398 |
|
|
qgSpatial.addQueryGroup(qgBounding);
|
399 |
|
|
qgSpatial.addQueryGroup(qgGeographicDescription);
|
400 |
|
|
queryGroup.addQueryGroup(qgSpatial);
|
401 |
|
|
}
|
402 |
|
|
else if (addBoundingValues) {
|
403 |
|
|
queryGroup.addQueryGroup(qgBounding);
|
404 |
|
|
}
|
405 |
|
|
else {
|
406 |
|
|
queryGroup.addQueryGroup(qgGeographicDescription);
|
407 |
|
|
}
|
408 |
|
|
}
|
409 |
|
|
|
410 |
|
|
}
|
411 |
|
|
|
412 |
|
|
|
413 |
|
|
/**
|
414 |
|
|
* Two kinds of temporal searches are supported. The first is on a named
|
415 |
|
|
* time scale. The second is on a specific start date and/or end date.
|
416 |
|
|
*/
|
417 |
|
|
private void buildQueryTemporalCriteria() {
|
418 |
|
|
boolean addQueryGroup = false;
|
419 |
|
|
boolean addQueryGroupDates = false;
|
420 |
|
|
boolean addQueryGroupNamed = false;
|
421 |
|
|
final String dateField = advancedSearchBean.getDateField();
|
422 |
|
|
String emlField;
|
423 |
|
|
final String operator = "INTERSECT";
|
424 |
|
|
String indent = getIndent(indentLevel * 2);
|
425 |
|
|
final int namedTimescaleQueryType =
|
426 |
|
|
advancedSearchBean.getNamedTimescaleQueryType();
|
427 |
|
|
AdvancedSearchQueryGroup qg= new AdvancedSearchQueryGroup(operator, indent);
|
428 |
|
|
AdvancedSearchQueryGroup qgNamed, qgDates, qgDatesStart, qgDatesEnd;
|
429 |
|
|
AdvancedSearchQueryTerm qt;
|
430 |
|
|
String searchMode;
|
431 |
|
|
final String namedTimescale, startDate, endDate;
|
432 |
|
|
|
433 |
|
|
indent = getIndent(indentLevel * 3);
|
434 |
|
|
namedTimescale = advancedSearchBean.getNamedTimescale();
|
435 |
|
|
startDate = advancedSearchBean.getStartDate();
|
436 |
|
|
endDate = advancedSearchBean.getEndDate();
|
437 |
|
|
|
438 |
|
|
/* If the user specified a named timescale, check to see whether it occurs
|
439 |
|
|
* in any of three possible places: singleDateTime, beginDate, or endDate.
|
440 |
|
|
*/
|
441 |
|
|
qgNamed = new AdvancedSearchQueryGroup("UNION", indent);
|
442 |
|
|
if ((namedTimescale != null) && (!(namedTimescale.equals("")))) {
|
443 |
|
|
indent = getIndent(indentLevel * 4);
|
444 |
|
|
searchMode = metacatSearchMode(namedTimescaleQueryType);
|
445 |
|
|
|
446 |
|
|
emlField =
|
447 |
|
|
"temporalCoverage/singleDateTime/alternativeTimeScale/timeScaleName";
|
448 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
449 |
|
|
namedTimescale, indent);
|
450 |
|
|
qgNamed.addQueryTerm(qt);
|
451 |
|
|
|
452 |
|
|
emlField =
|
453 |
|
|
"temporalCoverage/rangeOfDates/beginDate/alternativeTimeScale/timeScaleName";
|
454 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
455 |
|
|
namedTimescale, indent);
|
456 |
|
|
qgNamed.addQueryTerm(qt);
|
457 |
|
|
|
458 |
|
|
emlField =
|
459 |
|
|
"temporalCoverage/rangeOfDates/endDate/alternativeTimeScale/timeScaleName";
|
460 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
461 |
|
|
namedTimescale, indent);
|
462 |
|
|
qgNamed.addQueryTerm(qt);
|
463 |
|
|
|
464 |
|
|
addQueryGroupNamed = true;
|
465 |
|
|
}
|
466 |
|
|
|
467 |
|
|
qgDates = new AdvancedSearchQueryGroup("INTERSECT", indent);
|
468 |
|
|
|
469 |
|
|
// If a start date was specified, search for temporal coverage and/or a
|
470 |
|
|
// pubDate greater than or equal to the start date.
|
471 |
|
|
//
|
472 |
|
|
if ((startDate != null) && (!(startDate.equals("")))) {
|
473 |
|
|
indent = getIndent(indentLevel * 4);
|
474 |
|
|
qgDatesStart = new AdvancedSearchQueryGroup("UNION", indent);
|
475 |
|
|
indent = getIndent(indentLevel * 5);
|
476 |
|
|
searchMode = "greater-than-equals";
|
477 |
|
|
|
478 |
|
|
if (dateField.equals("ALL") || dateField.equals("COLLECTION")) {
|
479 |
|
|
emlField = "temporalCoverage/rangeOfDates/beginDate/calendarDate";
|
480 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
481 |
|
|
startDate, indent);
|
482 |
|
|
qgDatesStart.addQueryTerm(qt);
|
483 |
|
|
|
484 |
|
|
emlField = "temporalCoverage/singleDateTime/calendarDate";
|
485 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
486 |
|
|
startDate, indent);
|
487 |
|
|
qgDatesStart.addQueryTerm(qt);
|
488 |
|
|
}
|
489 |
|
|
|
490 |
|
|
if (dateField.equals("ALL") || dateField.equals("PUBLICATION")) {
|
491 |
|
|
emlField = "dataset/pubDate";
|
492 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
493 |
|
|
startDate, indent);
|
494 |
|
|
qgDatesStart.addQueryTerm(qt);
|
495 |
|
|
}
|
496 |
|
|
|
497 |
|
|
qgDates.addQueryGroup(qgDatesStart);
|
498 |
|
|
addQueryGroupDates = true;
|
499 |
|
|
}
|
500 |
|
|
|
501 |
|
|
// If an end date was specified, search for temporal coverage and/or a
|
502 |
|
|
// pubDate less than or equal to the end date.
|
503 |
|
|
//
|
504 |
|
|
if ((endDate != null) && (!(endDate.equals("")))) {
|
505 |
|
|
indent = getIndent(indentLevel * 4);
|
506 |
|
|
qgDatesEnd = new AdvancedSearchQueryGroup("UNION", indent);
|
507 |
|
|
indent = getIndent(indentLevel * 5);
|
508 |
|
|
searchMode = "less-than-equals";
|
509 |
|
|
|
510 |
|
|
if (dateField.equals("ALL") || dateField.equals("COLLECTION")) {
|
511 |
|
|
emlField = "temporalCoverage/rangeOfDates/endDate/calendarDate";
|
512 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
513 |
|
|
endDate, indent);
|
514 |
|
|
qgDatesEnd.addQueryTerm(qt);
|
515 |
|
|
|
516 |
|
|
emlField = "temporalCoverage/singleDateTime/calendarDate";
|
517 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
518 |
|
|
endDate, indent);
|
519 |
|
|
qgDatesEnd.addQueryTerm(qt);
|
520 |
|
|
}
|
521 |
|
|
|
522 |
|
|
if (dateField.equals("ALL") || dateField.equals("PUBLICATION")) {
|
523 |
|
|
emlField = "dataset/pubDate";
|
524 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
525 |
|
|
endDate, indent);
|
526 |
|
|
qgDatesEnd.addQueryTerm(qt);
|
527 |
|
|
}
|
528 |
|
|
|
529 |
|
|
qgDates.addQueryGroup(qgDatesEnd);
|
530 |
|
|
addQueryGroupDates = true;
|
531 |
|
|
}
|
532 |
|
|
|
533 |
|
|
if (addQueryGroupNamed) {
|
534 |
|
|
qg.addQueryGroup(qgNamed);
|
535 |
|
|
addQueryGroup = true;
|
536 |
|
|
}
|
537 |
|
|
|
538 |
|
|
if (addQueryGroupDates) {
|
539 |
|
|
qg.addQueryGroup(qgDates);
|
540 |
|
|
addQueryGroup = true;
|
541 |
|
|
}
|
542 |
|
|
|
543 |
|
|
if (addQueryGroup) {
|
544 |
|
|
hasTemporalSearch = true;
|
545 |
|
|
queryGroup.addQueryGroup(qg);
|
546 |
|
|
}
|
547 |
|
|
|
548 |
|
|
}
|
549 |
|
|
|
550 |
|
|
|
551 |
|
|
/**
|
552 |
|
|
* A taxon query searches the taxonomicClassification/taxonRankValue field,
|
553 |
|
|
* matching the field if the user-specified value is contained in the field.
|
554 |
|
|
*/
|
555 |
|
|
private void buildQueryTaxon() {
|
556 |
|
|
boolean addQueryGroup = false;
|
557 |
|
|
final String emlField;
|
558 |
|
|
String indent = getIndent(indentLevel * 2);
|
559 |
|
|
final String operator = "INTERSECT";
|
560 |
|
|
AdvancedSearchQueryGroup qg= new AdvancedSearchQueryGroup(operator, indent);
|
561 |
|
|
AdvancedSearchQueryTerm qt;
|
562 |
|
|
final String searchMode;
|
563 |
|
|
int taxonQueryType = advancedSearchBean.getTaxonQueryType();
|
564 |
|
|
final String value = advancedSearchBean.getTaxon();
|
565 |
|
|
|
566 |
|
|
indent = getIndent(indentLevel * 3);
|
567 |
|
|
|
568 |
|
|
if ((value != null) && (!(value.equals("")))) {
|
569 |
|
|
emlField = "taxonomicClassification/taxonRankValue";
|
570 |
|
|
searchMode = metacatSearchMode(taxonQueryType);
|
571 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
572 |
|
|
value, indent);
|
573 |
|
|
qg.addQueryTerm(qt);
|
574 |
|
|
addQueryGroup = true;
|
575 |
|
|
}
|
576 |
|
|
|
577 |
|
|
if (addQueryGroup) {
|
578 |
|
|
hasTaxonomicSearch = true;
|
579 |
|
|
queryGroup.addQueryGroup(qg);
|
580 |
|
|
}
|
581 |
|
|
}
|
582 |
|
|
|
583 |
|
|
|
584 |
|
|
/**
|
585 |
|
|
* Build a site filter. If the AdvancedSearch's site value is non-null, add a
|
586 |
|
|
* query group that limits the results to a particular LTER site. Do this
|
587 |
|
|
* by searching for a packageId attribute that starts with "knb-lter-xyz"
|
588 |
|
|
* where "xyz" is the three-letter site acronym, or for a site keyword
|
589 |
|
|
* phrase (e.g. "Kellogg Biological Station") anywhere in the documment.
|
590 |
|
|
*/
|
591 |
|
|
private void buildSiteFilter() {
|
592 |
|
|
String attributeValue = "";
|
593 |
|
|
String emlField = "";
|
594 |
|
|
String indent = getIndent(indentLevel * 2);
|
595 |
|
|
final LTERSite lterSite = new LTERSite(site);
|
596 |
|
|
final String operator = "UNION";
|
597 |
|
|
AdvancedSearchQueryGroup qg= new AdvancedSearchQueryGroup(operator, indent);
|
598 |
|
|
AdvancedSearchQueryTerm qt;
|
599 |
|
|
String searchMode;
|
600 |
|
|
final String siteKeyword;
|
601 |
|
|
|
602 |
|
|
if (lterSite.isValidSite()) {
|
603 |
|
|
hasSiteFilter = true;
|
604 |
|
|
indent = getIndent(indentLevel * 3);
|
605 |
|
|
|
606 |
|
|
// Handle some LTER sites with irregular naming conventions in their EML
|
607 |
|
|
// For CAP and CWT, we need to search on the system attribute rather than
|
608 |
|
|
// the packageId attribute
|
609 |
|
|
//
|
610 |
|
|
if (site.equals("CAP") || site.equals("CWT")) {
|
611 |
|
|
emlField = "/eml/@system";
|
612 |
|
|
attributeValue = lterSite.getSystem();
|
613 |
|
|
}
|
614 |
|
|
else {
|
615 |
|
|
// For other LTER sites, search the packageId
|
616 |
|
|
emlField = "/eml/@packageId";
|
617 |
|
|
attributeValue = lterSite.getPackageId();
|
618 |
|
|
}
|
619 |
|
|
|
620 |
|
|
searchMode = "starts-with";
|
621 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
622 |
|
|
attributeValue, indent);
|
623 |
|
|
qg.addQueryTerm(qt);
|
624 |
|
|
|
625 |
|
|
// Search for site keyword phrase
|
626 |
|
|
siteKeyword = lterSite.getSiteKeyword();
|
627 |
|
|
emlField = "";
|
628 |
|
|
searchMode = "contains";
|
629 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
630 |
|
|
siteKeyword, indent);
|
631 |
|
|
qg.addQueryTerm(qt);
|
632 |
|
|
|
633 |
|
|
queryGroup.addQueryGroup(qg);
|
634 |
|
|
}
|
635 |
|
|
}
|
636 |
|
|
|
637 |
|
|
|
638 |
|
|
/**
|
639 |
|
|
* Counts the number of search types on the form. For example, if the user
|
640 |
|
|
* has filled in values for both a subject search and a spatial search,
|
641 |
|
|
* would return 2.
|
642 |
|
|
*
|
643 |
|
|
* @return searchTypes An integer representing the total number of searches
|
644 |
|
|
* that the user has filled in for this advanced search.
|
645 |
|
|
*/
|
646 |
|
|
private int countSearchTypes () {
|
647 |
|
|
int searchTypes = 0;
|
648 |
|
|
|
649 |
|
|
if (hasSubjectSearch == true) { searchTypes++; }
|
650 |
|
|
if (hasAuthorSearch == true) { searchTypes++; }
|
651 |
|
|
if (hasSpatialSearch == true) { searchTypes++; }
|
652 |
|
|
if (hasTaxonomicSearch == true) { searchTypes++; }
|
653 |
|
|
if (hasTemporalSearch == true) { searchTypes++; }
|
654 |
|
|
if (hasSiteFilter == true) { searchTypes++; }
|
655 |
|
|
|
656 |
|
|
return searchTypes;
|
657 |
|
|
}
|
658 |
|
|
|
659 |
|
|
|
660 |
|
|
/**
|
661 |
|
|
* Builds and runs an advanced search, returning HTML result string.
|
662 |
|
|
*
|
663 |
|
|
* @param metacatURL URL to the metacat servlet
|
664 |
|
|
* @param metacat A metacat client object, possible null.
|
665 |
3008
|
costa
|
* @param qformat The qformat (skin) to use when displaying results.
|
666 |
2741
|
costa
|
* @param xslPath File path to the resultset.xsl stylesheet.
|
667 |
|
|
* @return htmlString HTML string representation of the search results.
|
668 |
|
|
*/
|
669 |
|
|
public String executeAdvancedSearch(final String metacatURL,
|
670 |
|
|
final Metacat metacat,
|
671 |
3008
|
costa
|
final String qformat,
|
672 |
2741
|
costa
|
final String xslPath) {
|
673 |
|
|
String htmlString = "";
|
674 |
|
|
int searchTypes;
|
675 |
|
|
|
676 |
|
|
buildQuerySubject();
|
677 |
|
|
buildQueryAuthor();
|
678 |
|
|
buildQueryTaxon();
|
679 |
|
|
buildQuerySpatialCriteria();
|
680 |
|
|
buildQueryTemporalCriteria();
|
681 |
|
|
buildSiteFilter();
|
682 |
|
|
|
683 |
|
|
// Count the number of search types the user has entered.
|
684 |
|
|
searchTypes = countSearchTypes();
|
685 |
|
|
|
686 |
|
|
// If the user has entered values for only one type of search criteria,
|
687 |
|
|
// then optimize the search by setting the QueryGroup object's
|
688 |
|
|
// includeOuterQueryGroup to false. This will strip off the outer query
|
689 |
|
|
// group and result in a more simplified SQL statement.
|
690 |
|
|
//
|
691 |
|
|
if (searchTypes == 1) {
|
692 |
|
|
queryGroup.setIncludeOuterQueryGroup(false);
|
693 |
|
|
}
|
694 |
|
|
|
695 |
|
|
queryString = pathQuery.toString();
|
696 |
3008
|
costa
|
htmlString = this.runQuery(metacatURL, metacat, qformat, xslPath);
|
697 |
2741
|
costa
|
return htmlString;
|
698 |
|
|
}
|
699 |
|
|
|
700 |
|
|
|
701 |
|
|
/**
|
702 |
|
|
* Builds and runs a simple search, returning HTML result string.
|
703 |
|
|
* For a simple search, the AdvancedSearchBean object can be null because
|
704 |
|
|
* all we need is a string value to search on.
|
705 |
|
|
*
|
706 |
|
|
* @param metacatURL URL to the metacat servlet
|
707 |
|
|
* @param metacat A metacat client object, possible null.
|
708 |
3008
|
costa
|
* @param qformat The qformat (skin) to use when displaying results.
|
709 |
2741
|
costa
|
* @param xslPath File path to the resultset.xsl stylesheet.
|
710 |
|
|
* @param value String value to search on.
|
711 |
|
|
*
|
712 |
|
|
* @return htmlString HTML string representation of the search results.
|
713 |
|
|
*/
|
714 |
|
|
public String executeSearch(final String metacatURL,
|
715 |
|
|
final Metacat metacat,
|
716 |
3008
|
costa
|
final String qformat,
|
717 |
2741
|
costa
|
final String xslPath,
|
718 |
|
|
String value) {
|
719 |
|
|
String emlField = "";
|
720 |
|
|
String htmlString = "";
|
721 |
|
|
String indent = getIndent(indentLevel * 2);
|
722 |
|
|
AdvancedSearchQueryTerm qt;
|
723 |
|
|
String searchMode = "contains";
|
724 |
|
|
|
725 |
|
|
indent = getIndent(indentLevel * 3);
|
726 |
|
|
|
727 |
|
|
/* Check whether user specified an empty search string.
|
728 |
|
|
*/
|
729 |
|
|
if ((value == null) || (value.equals(""))) {
|
730 |
|
|
value = "%";
|
731 |
|
|
}
|
732 |
|
|
|
733 |
|
|
qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
|
734 |
|
|
value, indent);
|
735 |
|
|
queryGroup.addQueryTerm(qt);
|
736 |
|
|
queryString = pathQuery.toString();
|
737 |
3008
|
costa
|
htmlString = this.runQuery(metacatURL, metacat, qformat, xslPath);
|
738 |
2741
|
costa
|
return htmlString;
|
739 |
|
|
}
|
740 |
|
|
|
741 |
|
|
|
742 |
|
|
/**
|
743 |
|
|
* Returns a string of spaces that corresponds to the current indent level.
|
744 |
|
|
*
|
745 |
|
|
* @param indentLevel The number of spaces to be indented.
|
746 |
|
|
* @return A string containing indentLevel number of spaces.
|
747 |
|
|
*/
|
748 |
|
|
private String getIndent(final int indentLevel) {
|
749 |
|
|
StringBuffer indent = new StringBuffer(12);
|
750 |
|
|
|
751 |
|
|
for (int i = 0; i < indentLevel; i++) {
|
752 |
|
|
indent.append(" ");
|
753 |
|
|
}
|
754 |
|
|
|
755 |
|
|
return indent.toString();
|
756 |
|
|
}
|
757 |
|
|
|
758 |
|
|
|
759 |
|
|
/**
|
760 |
|
|
* Given a AdvancedSearchBean query type, return the corresponding Metacat
|
761 |
|
|
* searchmode string.
|
762 |
|
|
*
|
763 |
|
|
* @param queryType An int indicating the query type as specified in
|
764 |
|
|
* the AdvancedSearchBean class.
|
765 |
|
|
* @return searchmode A string, the Metacat search mode value.
|
766 |
|
|
*/
|
767 |
|
|
private String metacatSearchMode(final int queryType) {
|
768 |
|
|
final String searchMode;
|
769 |
|
|
|
770 |
|
|
switch (queryType) {
|
771 |
|
|
case AdvancedSearchBean.CONTAINS:
|
772 |
|
|
searchMode = "contains";
|
773 |
|
|
break;
|
774 |
|
|
case AdvancedSearchBean.EXACT_MATCH:
|
775 |
|
|
searchMode = "equals";
|
776 |
|
|
break;
|
777 |
|
|
case AdvancedSearchBean.STARTS_WITH:
|
778 |
|
|
searchMode = "starts-with";
|
779 |
|
|
break;
|
780 |
|
|
case AdvancedSearchBean.ENDS_WITH:
|
781 |
|
|
searchMode = "ends-with";
|
782 |
|
|
break;
|
783 |
|
|
default:
|
784 |
|
|
searchMode = "contains";
|
785 |
|
|
break;
|
786 |
|
|
}
|
787 |
|
|
|
788 |
|
|
return searchMode;
|
789 |
|
|
}
|
790 |
|
|
|
791 |
|
|
|
792 |
|
|
/**
|
793 |
|
|
* Parses search terms from a string. In this simple implementation, the
|
794 |
|
|
* string is considered to be a list of tokens separated by spaces. The more
|
795 |
|
|
* advanced implementation (parserTermsAdvanced) parses quoted strings
|
796 |
|
|
* containing spaces as a term. This method can be eliminated if we are
|
797 |
|
|
* satisfied that parseTermsAdvanced() is working properly.
|
798 |
|
|
*
|
799 |
|
|
* @param value The string value as entered by the user.
|
800 |
|
|
*
|
801 |
|
|
* @return terms An ArrayList of String objects. Each space-separated
|
802 |
|
|
* token is a single term.
|
803 |
3008
|
costa
|
*
|
804 |
2741
|
costa
|
private ArrayList parseTerms(final String value) {
|
805 |
|
|
StringTokenizer st;
|
806 |
|
|
ArrayList terms = new ArrayList();
|
807 |
|
|
String token;
|
808 |
|
|
final int tokenCount;
|
809 |
|
|
|
810 |
|
|
st = new StringTokenizer(value, " ");
|
811 |
|
|
tokenCount = st.countTokens();
|
812 |
|
|
|
813 |
|
|
for (int i = 0; i < tokenCount; i++) {
|
814 |
|
|
token = st.nextToken();
|
815 |
|
|
terms.add(token);
|
816 |
|
|
}
|
817 |
|
|
|
818 |
|
|
return terms;
|
819 |
|
|
}
|
820 |
3008
|
costa
|
*/
|
821 |
2741
|
costa
|
|
822 |
|
|
|
823 |
|
|
/**
|
824 |
|
|
* Parses search terms from a string. In this advanced implementation,
|
825 |
|
|
* double-quoted strings that contain spaces are considered a single term.
|
826 |
|
|
*
|
827 |
|
|
* @param value The string value as entered by the user.
|
828 |
|
|
*
|
829 |
|
|
* @return terms An ArrayList of String objects. Each string is a term.
|
830 |
|
|
*/
|
831 |
|
|
private ArrayList parseTermsAdvanced(String value) {
|
832 |
|
|
char c;
|
833 |
|
|
StringBuffer currentTerm = new StringBuffer(100);
|
834 |
|
|
boolean keepSpaces = false;
|
835 |
|
|
final int stringLength;
|
836 |
|
|
ArrayList terms = new ArrayList();
|
837 |
|
|
|
838 |
|
|
value = value.trim();
|
839 |
|
|
stringLength = value.length();
|
840 |
|
|
|
841 |
|
|
for (int i = 0; i < stringLength; i++) {
|
842 |
|
|
c = value.charAt(i);
|
843 |
|
|
|
844 |
|
|
if (c == '\"') {
|
845 |
|
|
// Termination of a quote-enclosed term. Add the current term to the
|
846 |
|
|
// list and start a new term.
|
847 |
|
|
if (keepSpaces) {
|
848 |
|
|
addTerm(terms, currentTerm);
|
849 |
|
|
currentTerm = new StringBuffer(100);
|
850 |
|
|
}
|
851 |
|
|
|
852 |
|
|
keepSpaces = !(keepSpaces); // Toggle keepSpaces to its opposite value.
|
853 |
|
|
}
|
854 |
|
|
else if (c == ' ') {
|
855 |
|
|
// If we are inside a quote-enclosed term, append the space.
|
856 |
|
|
if (keepSpaces) {
|
857 |
|
|
currentTerm.append(c);
|
858 |
|
|
}
|
859 |
|
|
// Else, add the current term to the list and start a new term.
|
860 |
|
|
else {
|
861 |
|
|
addTerm(terms, currentTerm);
|
862 |
|
|
currentTerm = new StringBuffer(100);
|
863 |
|
|
}
|
864 |
|
|
}
|
865 |
|
|
else {
|
866 |
|
|
// Append any non-quote, non-space characters to the current term.
|
867 |
|
|
currentTerm.append(c);
|
868 |
|
|
}
|
869 |
|
|
}
|
870 |
|
|
|
871 |
|
|
// Add the final term to the list.
|
872 |
|
|
addTerm(terms, currentTerm);
|
873 |
|
|
|
874 |
|
|
return terms;
|
875 |
|
|
}
|
876 |
|
|
|
877 |
|
|
|
878 |
|
|
/**
|
879 |
|
|
* Runs the Metacat query for a browse search, simple search, or advanced
|
880 |
|
|
* search.
|
881 |
|
|
*
|
882 |
|
|
* @param metacatURL URL to the metacat servlet
|
883 |
|
|
* @param metacat A metacat client object, possible null.
|
884 |
3008
|
costa
|
* @param qformat The qformat (skin) to use when displaying results.
|
885 |
2741
|
costa
|
* @param xslPath File path to the resultset.xsl stylesheet.
|
886 |
|
|
* @return htmlString HTML string representation of the search results.
|
887 |
|
|
*/
|
888 |
|
|
private String runQuery(final String metacatURL,
|
889 |
|
|
Metacat metacat,
|
890 |
3008
|
costa
|
final String qformat,
|
891 |
2741
|
costa
|
final String xslPath) {
|
892 |
|
|
String htmlString = "";
|
893 |
|
|
Reader reader;
|
894 |
|
|
String resultset = "";
|
895 |
|
|
String sessionId;
|
896 |
|
|
StringReader stringReader;
|
897 |
|
|
Stylizer stylizer = new Stylizer();
|
898 |
|
|
|
899 |
|
|
if (metacat == null) {
|
900 |
|
|
try {
|
901 |
|
|
metacat = MetacatFactory.createMetacatConnection(metacatURL);
|
902 |
|
|
}
|
903 |
|
|
catch (MetacatInaccessibleException mie) {
|
904 |
|
|
System.err.println("Metacat Inaccessible:\n" + mie.getMessage());
|
905 |
|
|
}
|
906 |
|
|
}
|
907 |
|
|
|
908 |
|
|
sessionId = metacat.getSessionId();
|
909 |
|
|
|
910 |
|
|
try {
|
911 |
|
|
System.err.println("Starting query...");
|
912 |
|
|
stringReader = new StringReader(queryString);
|
913 |
|
|
reader = metacat.query(stringReader);
|
914 |
|
|
resultset = IOUtil.getAsString(reader, true);
|
915 |
|
|
System.err.println("Query result:\n" + resultset);
|
916 |
|
|
htmlString = stylizer.resultsetToHTML(resultset, sessionId,
|
917 |
3008
|
costa
|
metacatURL, qformat, xslPath);
|
918 |
2741
|
costa
|
}
|
919 |
|
|
catch (Exception e) {
|
920 |
|
|
System.err.println("General exception:\n" + e.getMessage());
|
921 |
|
|
e.printStackTrace();
|
922 |
|
|
}
|
923 |
|
|
|
924 |
|
|
return(htmlString);
|
925 |
|
|
}
|
926 |
|
|
|
927 |
|
|
|
928 |
|
|
/**
|
929 |
|
|
* Main program to run a test query from the command line.
|
930 |
|
|
*
|
931 |
|
|
* Pass the server name, server port, and path to resultset.xsl as the first
|
932 |
|
|
* three command line arguments:
|
933 |
|
|
*
|
934 |
|
|
* @param argv[0] The server name, e.g. "earth.lternet.edu"
|
935 |
|
|
* @param argv[1] The server port, e.g. "8080", or 0 if no port needs
|
936 |
|
|
* to be specified.
|
937 |
2822
|
costa
|
* @param argv[2] The context string, e.g. "knb"
|
938 |
|
|
* @param argv[3] The path to the resultset.xsl stylesheet, e.g.
|
939 |
2741
|
costa
|
* "C:/Tomcat5/webapps/query/style/common/resultset.xsl"
|
940 |
|
|
*/
|
941 |
|
|
public static void main(String[] argv) {
|
942 |
|
|
AdvancedSearch advancedSearch;
|
943 |
|
|
AdvancedSearchBean advancedSearchBean = new AdvancedSearchBean();
|
944 |
2822
|
costa
|
String contextString = argv[2];
|
945 |
2741
|
costa
|
MetacatHelper metacatHelper = new MetacatHelper();
|
946 |
|
|
String metacatURL;
|
947 |
3008
|
costa
|
String qformat = "lter";
|
948 |
2741
|
costa
|
final String serverName = argv[0];
|
949 |
|
|
final Integer serverPortInteger = new Integer(argv[1]);
|
950 |
|
|
final int serverPort = serverPortInteger.intValue();
|
951 |
2822
|
costa
|
final String xslPath = argv[3];
|
952 |
2741
|
costa
|
|
953 |
|
|
advancedSearchBean.setSubjectField("ALL");
|
954 |
|
|
advancedSearchBean.setSubjectValue("bird");
|
955 |
|
|
//advancedSearchBean.setCreatorSurname("Walsh");
|
956 |
|
|
//advancedSearchBean.setCreatorSurnameQueryType(0);
|
957 |
|
|
//advancedSearchBean.setCreatorOrganization("Georgia Coastal Ecosystems");
|
958 |
|
|
//advancedSearchBean.setTaxon("Crustacea");
|
959 |
|
|
//advancedSearchBean.setLocationName("Georgia");
|
960 |
|
|
//advancedSearchBean.setNorthBound("31.5");
|
961 |
|
|
//advancedSearchBean.setSouthBound("10");
|
962 |
|
|
//advancedSearchBean.setEastBound("-50");
|
963 |
|
|
//advancedSearchBean.setWestBound("-90");
|
964 |
|
|
//advancedSearchBean.setNamedTimescale("Phanerozoic");
|
965 |
|
|
//advancedSearchBean.setStartDate("2001-01-01");
|
966 |
|
|
//advancedSearchBean.setEndDate("2001-07-01");
|
967 |
|
|
advancedSearch = new AdvancedSearch(advancedSearchBean);
|
968 |
2822
|
costa
|
metacatURL =
|
969 |
|
|
metacatHelper.constructMetacatURL(serverName, serverPort, contextString);
|
970 |
3008
|
costa
|
advancedSearch.executeAdvancedSearch(metacatURL, null, qformat, xslPath);
|
971 |
2741
|
costa
|
}
|
972 |
|
|
|
973 |
|
|
}
|