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<%@page
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import="java.util.Iterator"%><%@page
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import="java.util.ArrayList"%><%@page
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import="edu.ucsb.nceas.utilities.OrderedMap"%><%@page
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import="java.util.List"%><%@page
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import="java.util.Enumeration"%><%@page
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import="java.sql.SQLException"%><%@page
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import="org.ecoinformatics.datamanager.transpose.DataTranspose"%><%@page
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import="au.com.bytecode.opencsv.CSVWriter"%><%@page
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import="java.io.OutputStreamWriter"%><%@page
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import="java.io.Writer"%><%@page
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import="java.sql.ResultSet"%><%@page
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import="edu.ucsb.nceas.metacat.dataquery.DataQuery"%><%@page
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import="java.io.IOException"%><%@page
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import="edu.ucsb.nceas.utilities.PropertyNotFoundException"%><%@page
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import="edu.ucsb.nceas.metacat.util.SystemUtil"%><%@page
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import="java.util.Hashtable"%><%@ page
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language="java" %><%
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/**
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*
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* '$RCSfile$'
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* Copyright: 2008 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* '$Author: leinfelder $'
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* '$Date: 2008-08-22 16:48:56 -0700 (Fri, 22 Aug 2008) $'
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* '$Revision: 4305 $'
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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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* 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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%><%
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Hashtable params = getParams(request);
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handleDataquery(params,response,request.getSession().getId());
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%><%!
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private Hashtable getParams(HttpServletRequest request) {
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Hashtable params = new Hashtable();
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Enumeration<String> paramlist = (Enumeration<String>)request.getParameterNames();
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while (paramlist.hasMoreElements()) {
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String name = paramlist.nextElement();
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String[] value = request.getParameterValues(name);
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params.put(name, value);
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}
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return params;
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}
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%><%!
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private List processResultsSet(ResultSet rs, int omitColumn, String omitColumnLabel) throws SQLException {
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List retTable = new ArrayList();
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int colCount = rs.getMetaData().getColumnCount();
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List columnHeaders = new ArrayList();
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int recordCount = 1;
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OrderedMap uniqueIds = new OrderedMap();
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while (rs.next()) {
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List row = new ArrayList();
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//get the values for this row
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for (int i = 1; i <= colCount; i++) {
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String colName = rs.getMetaData().getColumnName(i);
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String value = rs.getString(i);
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//clean up the value
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value = cleanUp(value);
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//hide the ids
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if (i == omitColumn) {
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String lookupValue = (String) uniqueIds.get(value);
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if (lookupValue == null) {
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lookupValue = recordCount + "";
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}
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uniqueIds.put(value, lookupValue);
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value = lookupValue;
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colName = omitColumnLabel;
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}
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if (recordCount == 1) {
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columnHeaders.add(colName);
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}
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row.add(value);
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}
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retTable.add(row.toArray(new String[0]));
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recordCount++;
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}
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//make sure there are no "?column?" headers
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for (int i = 0; i < columnHeaders.size(); i++) {
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String columnName = (String) columnHeaders.get(i);
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if (columnName.equals("?column?")) {
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String previousColumn = (String) columnHeaders.get(i-1);
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String[] previousParts = previousColumn.split("_");
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int previousCount = Integer.parseInt(previousParts[1]);
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columnName = previousParts[0] + "_"+ (previousCount + 1);
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columnHeaders.set(i, columnName);
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}
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}
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retTable.add(0, columnHeaders.toArray(new String[0]));
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return retTable;
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}
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%><%!
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private List transpose(ResultSet rs, int idCol, int pivotCol, List pivotAttributes, boolean omitIdValues) throws SQLException {
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//map keyed by id column - data
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OrderedMap table = new OrderedMap();
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//track all the data columns
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OrderedMap widestRow = new OrderedMap();
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//map keyed by the pivot column - metadata
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OrderedMap headerRows = new OrderedMap();
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//vocab columns
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String vocabNameCol = "qmetadatavocabulary";
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String vocabValueCol = "qmetadatavalue";
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//maps for the vocab lists
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OrderedMap vocabNames = new OrderedMap();
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OrderedMap vocabValues = new OrderedMap();
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//all vocab names/values
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List allVocabNames = new ArrayList();
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List allVocabValues = new ArrayList();
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boolean twoColumnMetadata = false;
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int colCount = rs.getMetaData().getColumnCount();
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String idColName = rs.getMetaData().getColumnName(idCol);
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while (rs.next()) {
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String id = rs.getString(idCol);
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String pivotValue = rs.getString(pivotCol);
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//look up the data row we are working on
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OrderedMap row = (OrderedMap) table.get(id);
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if (row == null) {
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row = new OrderedMap();
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}
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//look up the metadata row we are working on
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OrderedMap metadataRow = (OrderedMap) table.get(pivotValue);
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if (metadataRow == null) {
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metadataRow = new OrderedMap();
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}
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//get the values for this pivot
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for (int i = 1; i <= colCount; i++) {
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if (i != pivotCol) {
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String colName = rs.getMetaData().getColumnName(i);
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//check for "missing" headers in the qchoice
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/*
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if (colName.equals("?column?")) {
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String previousColumn = rs.getMetaData().getColumnName(i-1);
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if (previousColumn.startsWith("qchoice")) {
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String[] previousParts = previousColumn.split("_");
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int previousCount = 0;
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if (previousParts.length == 2) {
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previousCount = Integer.parseInt(previousParts[1]);
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}
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colName = previousParts[0] + "_"+ (previousCount + 1);
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}
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}
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*/
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String value = rs.getString(i);
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//clean up the value
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value = cleanUp(value);
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//do we include this column in the pivot?
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if (pivotAttributes.contains(colName)) {
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//annotate the column name with the pivot column value if not the id column
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if (i != idCol) {
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colName = pivotValue + "_" + colName;
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}
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row.put(colName, value);
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}
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else {
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if (colName.startsWith(vocabNameCol) || colName.startsWith(vocabValueCol)) {
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//don't add it to the normal metadata
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}
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else {
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metadataRow.put(colName, value);
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}
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}
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//names
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if (colName.startsWith(vocabNameCol)) {
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List list = (List) vocabNames.get(pivotValue);
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if (list == null) {
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list = new ArrayList();
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}
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list.add(value);
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vocabNames.put(pivotValue, list);
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allVocabNames.add(value);
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}
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//values
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if (colName.startsWith(vocabValueCol)) {
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List list = (List) vocabValues.get(pivotValue);
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if (list == null) {
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list = new ArrayList();
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}
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list.add(value);
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vocabValues.put(pivotValue, list);
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allVocabValues.add(value);
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}
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}
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}
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//track the data columns - the values are junk
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widestRow.putAll(row);
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//put the row back (or maybe it's the first time)
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table.put(id, row);
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//put the metadata header back
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headerRows.put(pivotValue, metadataRow);
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}
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/** Construct the table structure for returning **/
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//now make it into a list
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List retTable = new ArrayList();
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//map keyed by metadata labels
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OrderedMap metadataHeaders = new OrderedMap();
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//do the data header - drives the other columns - based on widest entry
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List header = new ArrayList(widestRow.keySet());
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//do the metadata header rows (basically rotate them around)
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Iterator headerIter = header.iterator();
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String lastValue = "";
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while (headerIter.hasNext()) {
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String column = (String) headerIter.next();
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//get the pivotValue part of column name
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String pivotValue = column;
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try {
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pivotValue = column.substring(0, column.indexOf("_"));
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}
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catch (Exception e) {}
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//look up the row from the metadata - keyed by pivot value
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OrderedMap metadataRow = (OrderedMap) headerRows.get(pivotValue);
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if (metadataRow != null) {
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//go through the values
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Iterator metadataIter = metadataRow.keySet().iterator();
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while (metadataIter.hasNext()) {
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String key = (String) metadataIter.next();
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String value = (String) metadataRow.get(key);
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OrderedMap newMetadataRow = (OrderedMap) metadataHeaders.get(key);
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if (newMetadataRow == null) {
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newMetadataRow = new OrderedMap();
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}
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//if it's the same as the last one, just use null value
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if (lastValue.equals(pivotValue)) {
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value = null;
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}
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newMetadataRow.put(column, value);
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metadataHeaders.put(key, newMetadataRow);
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}
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}
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lastValue = pivotValue;
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}
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//make metadata rows as list/arrays on the reteurn table
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Iterator metadataLabelIter = metadataHeaders.keySet().iterator();
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while (metadataLabelIter.hasNext()) {
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String label = (String) metadataLabelIter.next();
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OrderedMap row = (OrderedMap) metadataHeaders.get(label);
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List rowValues = new ArrayList(row.values());
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rowValues.add(0, label);
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if (twoColumnMetadata) {
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//add extra column
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rowValues.add(1, null);
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}
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retTable.add(rowValues.toArray(new String[0]));
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}
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//create the special vocab matrix rows
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List vocabTable = new ArrayList();
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List uniqueVocabs = new ArrayList();
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for (int i = 0; i < allVocabNames.size(); i++) {
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List vocabRow = new ArrayList();
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String vocabName = (String) allVocabNames.get(i);
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String vocabValue = (String) allVocabValues.get(i);
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String key = vocabName + "/" + vocabValue;
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//check if we've processed this already, skip if so
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if (uniqueVocabs.contains(key)) {
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continue;
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}
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uniqueVocabs.add(key);
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if (twoColumnMetadata) {
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vocabRow.add(vocabName);
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vocabRow.add(vocabValue);
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}
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else {
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vocabRow.add(key);
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}
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//go through the questions now, again
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String lastPivotValue = "";
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headerIter = header.iterator();
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while (headerIter.hasNext()) {
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String column = (String) headerIter.next();
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//get the pivotValue part of column name if it exists
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String pivotValue = null;
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try {
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pivotValue = column.substring(0, column.indexOf("_"));
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}
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catch (Exception e) {}
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if (pivotValue == null) {
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continue;
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}
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//check to not duplicate values
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if (pivotValue.equals(lastPivotValue)) {
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vocabRow.add(null);
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}
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else {
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//check to see if this question has that keyword
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List names = (List) vocabNames.get(pivotValue);
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List values = (List) vocabValues.get(pivotValue);
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String containsVocabItem = "false";
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if (names != null) {
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int vocabNameIndex = names.indexOf(vocabName);
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int vocabValueIndex = values.indexOf(vocabValue);
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// contains the vocab and the value _somewhere_
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if (vocabNameIndex > -1 && vocabValueIndex > -1) {
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containsVocabItem = "true";
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}
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}
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vocabRow.add(containsVocabItem);
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}
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lastPivotValue = pivotValue;
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}
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//put the row on
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vocabTable.add(vocabRow.toArray(new String[0]));
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}
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//put the vocab matrix on the table
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retTable.addAll(vocabTable);
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if (twoColumnMetadata) {
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//add column to data header row
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header.add(1, null);
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}
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//replace the "studentId" label
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int temp = header.indexOf("studentid");
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if (header.remove(temp) != null) {
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header.add(temp, "recordNum");
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}
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//put the data header row on the table
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retTable.add(header.toArray(new String[0]));
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//now the value rows in the table
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Iterator rowIter = table.values().iterator();
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int rowCount = 1;
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while (rowIter.hasNext()) {
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OrderedMap rowMap = (OrderedMap) rowIter.next();
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List row = new ArrayList();
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//iterate over the widest row's columns
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Iterator columnIter = widestRow.keySet().iterator();
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while (columnIter.hasNext()) {
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Object key = columnIter.next();
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Object value = rowMap.get(key);
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//hide the value used for Ids - just increment row
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if (key.equals(idColName) && omitIdValues) {
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value = String.valueOf(rowCount);
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}
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row.add(value);
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}
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rowCount++;
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if (twoColumnMetadata) {
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//add extra column
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row.add(1, null);
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}
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retTable.add(row.toArray(new String[0]));
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}
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return retTable;
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}
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%><%!
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private String cleanUp(String value) {
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if (value != null) {
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value = value.replaceAll("\n", " ");
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value = value.replaceAll("\\s+", " ");
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value = value.replaceAll("<html>", " ");
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value = value.replaceAll("</html>", " ");
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value = value.replaceAll("<head>", " ");
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value = value.replaceAll("</head>", " ");
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value = value.replaceAll("<body>", " ");
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value = value.replaceAll("</body>", " ");
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//translate any ecogrid urls
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value = convertEcogridURL(value);
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}
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return value;
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}
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%><%!
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private String convertEcogridURL(String value) {
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if (value != null) {
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String prefix = "ecogrid://knb/";
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if (value.startsWith(prefix)) {
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//String docid = value.substring(prefix.length(), value.length());
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// TODO make URL
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String contextURL = "";
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try {
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contextURL = SystemUtil.getContextURL();
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}
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catch (PropertyNotFoundException pnfe) {
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//do nothing
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}
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value = value.replaceFirst(prefix, contextURL + "/metacat?action=read&docid=");
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}
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}
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return value;
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}
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%><%!
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422
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private void handleDataquery(
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Hashtable<String, String[]> params,
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424
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HttpServletResponse response,
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425
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String sessionId) throws PropertyNotFoundException, IOException {
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426
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DataQuery dq = null;
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if (sessionId != null) {
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dq = new DataQuery(sessionId);
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}
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else {
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dq = new DataQuery();
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}
|
434
|
|
435
|
String dataqueryXML = (params.get("dataquery"))[0];
|
436
|
|
437
|
ResultSet rs = null;
|
438
|
try {
|
439
|
rs = dq.executeQuery(dataqueryXML);
|
440
|
} catch (Exception e) {
|
441
|
//probably need to do something here
|
442
|
e.printStackTrace();
|
443
|
return;
|
444
|
}
|
445
|
|
446
|
//process the result set
|
447
|
String qformat = "csv";
|
448
|
String[] temp = params.get("qformat");
|
449
|
if (temp != null && temp.length > 0) {
|
450
|
qformat = temp[0];
|
451
|
}
|
452
|
String fileName = "query-results." + qformat;
|
453
|
|
454
|
boolean transpose = false;
|
455
|
temp = params.get("transpose");
|
456
|
if (temp != null && temp.length > 0) {
|
457
|
transpose = Boolean.parseBoolean(temp[0]);
|
458
|
}
|
459
|
int observation = 0;
|
460
|
temp = params.get("observation");
|
461
|
if (temp != null && temp.length > 0) {
|
462
|
observation = Integer.parseInt(temp[0]);
|
463
|
}
|
464
|
int pivot = 0;
|
465
|
temp = params.get("pivot");
|
466
|
if (temp != null && temp.length > 0) {
|
467
|
pivot = Integer.parseInt(temp[0]);
|
468
|
}
|
469
|
String[] pivotColumns = null;
|
470
|
temp = params.get("pivotColumns");
|
471
|
if (temp != null && temp.length > 0) {
|
472
|
pivotColumns = temp;
|
473
|
}
|
474
|
|
475
|
//get the results as csv file
|
476
|
if (qformat != null && qformat.equalsIgnoreCase("csv")) {
|
477
|
response.setContentType("text/csv");
|
478
|
//response.setContentType("application/csv");
|
479
|
response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
|
480
|
|
481
|
Writer writer = new OutputStreamWriter(response.getOutputStream());
|
482
|
//CSVWriter csv = new CSVWriter(writer, CSVWriter.DEFAULT_SEPARATOR, CSVWriter.NO_QUOTE_CHARACTER);
|
483
|
CSVWriter csv = new CSVWriter(writer, CSVWriter.DEFAULT_SEPARATOR, CSVWriter.DEFAULT_QUOTE_CHARACTER, CSVWriter.DEFAULT_ESCAPE_CHARACTER);
|
484
|
try {
|
485
|
if (transpose) {
|
486
|
List pivotCols = new ArrayList();
|
487
|
if (pivotColumns != null) {
|
488
|
for (int i = 0; i < pivotColumns.length; i++) {
|
489
|
pivotCols.add(pivotColumns[i]);
|
490
|
}
|
491
|
} else {
|
492
|
pivotCols.add("studentid");
|
493
|
pivotCols.add("score");
|
494
|
pivotCols.add("response");
|
495
|
pivotCols.add("responsefile");
|
496
|
}
|
497
|
List transposedTable = transpose(rs, observation, pivot, pivotCols, true);
|
498
|
csv.writeAll(transposedTable);
|
499
|
} else {
|
500
|
List processedTable = processResultsSet(rs, 3, "recordNum");
|
501
|
csv.writeAll(processedTable);
|
502
|
}
|
503
|
|
504
|
csv.flush();
|
505
|
response.flushBuffer();
|
506
|
|
507
|
rs.close();
|
508
|
|
509
|
} catch (SQLException e) {
|
510
|
e.printStackTrace();
|
511
|
}
|
512
|
|
513
|
return;
|
514
|
}
|
515
|
|
516
|
}
|
517
|
%>
|