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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: costa $'
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* '$Date: 2006-06-14 08:35:26 -0700 (Wed, 14 Jun 2006) $'
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* '$Revision: 3008 $'
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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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"geographicCoverage/boundingCoordinates/northBoundingCoordinate";
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searchMode = "greater-than";
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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/westBoundingCoordinate";
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searchMode = "less-than";
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qt = new AdvancedSearchQueryTerm(searchMode, caseSensitive, emlField,
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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
|
* @param qformat The qformat (skin) to use when displaying results.
|
|
666
|
* @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
|
final String qformat,
|
|
672
|
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
|
htmlString = this.runQuery(metacatURL, metacat, qformat, xslPath);
|
|
697
|
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
|
* @param qformat The qformat (skin) to use when displaying results.
|
|
709
|
* @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
|
final String qformat,
|
|
717
|
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
|
htmlString = this.runQuery(metacatURL, metacat, qformat, xslPath);
|
|
738
|
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
|
*
|
|
804
|
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
|
*/
|
|
821
|
|
|
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
|
* @param qformat The qformat (skin) to use when displaying results.
|
|
885
|
* @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
|
final String qformat,
|
|
891
|
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
|
metacatURL, qformat, xslPath);
|
|
918
|
}
|
|
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
|
* @param argv[2] The context string, e.g. "knb"
|
|
938
|
* @param argv[3] The path to the resultset.xsl stylesheet, e.g.
|
|
939
|
* "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
|
String contextString = argv[2];
|
|
945
|
MetacatHelper metacatHelper = new MetacatHelper();
|
|
946
|
String metacatURL;
|
|
947
|
String qformat = "lter";
|
|
948
|
final String serverName = argv[0];
|
|
949
|
final Integer serverPortInteger = new Integer(argv[1]);
|
|
950
|
final int serverPort = serverPortInteger.intValue();
|
|
951
|
final String xslPath = argv[3];
|
|
952
|
|
|
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
|
metacatURL =
|
|
969
|
metacatHelper.constructMetacatURL(serverName, serverPort, contextString);
|
|
970
|
advancedSearch.executeAdvancedSearch(metacatURL, null, qformat, xslPath);
|
|
971
|
}
|
|
972
|
|
|
973
|
}
|