681 lines
24 KiB
Java
681 lines
24 KiB
Java
/*
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* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.rowset.internal;
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import com.sun.rowset.JdbcRowSetResourceBundle;
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import java.sql.*;
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import javax.sql.*;
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import java.io.*;
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import java.text.MessageFormat;
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import java.util.*;
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import javax.sql.rowset.*;
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import javax.sql.rowset.spi.*;
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/**
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* An implementation of the <code>XmlWriter</code> interface, which writes a
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* <code>WebRowSet</code> object to an output stream as an XML document.
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*/
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public class WebRowSetXmlWriter implements XmlWriter, Serializable {
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/**
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* The <code>java.io.Writer</code> object to which this <code>WebRowSetXmlWriter</code>
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* object will write when its <code>writeXML</code> method is called. The value
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* for this field is set with the <code>java.io.Writer</code> object given
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* as the second argument to the <code>writeXML</code> method.
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*/
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private transient java.io.Writer writer;
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/**
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* The <code>java.util.Stack</code> object that this <code>WebRowSetXmlWriter</code>
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* object will use for storing the tags to be used for writing the calling
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* <code>WebRowSet</code> object as an XML document.
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*/
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private java.util.Stack<String> stack;
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private JdbcRowSetResourceBundle resBundle;
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public WebRowSetXmlWriter() {
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try {
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resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
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} catch(IOException ioe) {
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throw new RuntimeException(ioe);
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}
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}
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/**
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* Writes the given <code>WebRowSet</code> object as an XML document
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* using the given <code>java.io.Writer</code> object. The XML document
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* will include the <code>WebRowSet</code> object's data, metadata, and
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* properties. If a data value has been updated, that information is also
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* included.
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* <P>
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* This method is called by the <code>XmlWriter</code> object that is
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* referenced in the calling <code>WebRowSet</code> object's
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* <code>xmlWriter</code> field. The <code>XmlWriter.writeXML</code>
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* method passes to this method the arguments that were supplied to it.
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*
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* @param caller the <code>WebRowSet</code> object to be written; must
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* be a rowset for which this <code>WebRowSetXmlWriter</code> object
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* is the writer
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* @param wrt the <code>java.io.Writer</code> object to which
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* <code>caller</code> will be written
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* @exception SQLException if a database access error occurs or
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* this <code>WebRowSetXmlWriter</code> object is not the writer
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* for the given rowset
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* @see XmlWriter#writeXML
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*/
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public void writeXML(WebRowSet caller, java.io.Writer wrt)
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throws SQLException {
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// create a new stack for tag checking.
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stack = new java.util.Stack<>();
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writer = wrt;
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writeRowSet(caller);
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}
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/**
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* Writes the given <code>WebRowSet</code> object as an XML document
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* using the given <code>java.io.OutputStream</code> object. The XML document
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* will include the <code>WebRowSet</code> object's data, metadata, and
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* properties. If a data value has been updated, that information is also
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* included.
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* <P>
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* Using stream is a faster way than using <code>java.io.Writer<code/>
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*
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* This method is called by the <code>XmlWriter</code> object that is
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* referenced in the calling <code>WebRowSet</code> object's
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* <code>xmlWriter</code> field. The <code>XmlWriter.writeXML</code>
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* method passes to this method the arguments that were supplied to it.
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*
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* @param caller the <code>WebRowSet</code> object to be written; must
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* be a rowset for which this <code>WebRowSetXmlWriter</code> object
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* is the writer
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* @param oStream the <code>java.io.OutputStream</code> object to which
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* <code>caller</code> will be written
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* @throws SQLException if a database access error occurs or
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* this <code>WebRowSetXmlWriter</code> object is not the writer
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* for the given rowset
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* @see XmlWriter#writeXML
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*/
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public void writeXML(WebRowSet caller, java.io.OutputStream oStream)
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throws SQLException {
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// create a new stack for tag checking.
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stack = new java.util.Stack<>();
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writer = new OutputStreamWriter(oStream);
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writeRowSet(caller);
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}
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/**
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*
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*
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* @exception SQLException if a database access error occurs
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*/
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private void writeRowSet(WebRowSet caller) throws SQLException {
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try {
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startHeader();
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writeProperties(caller);
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writeMetaData(caller);
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writeData(caller);
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endHeader();
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} catch (java.io.IOException ex) {
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throw new SQLException(MessageFormat.format(resBundle.handleGetObject("wrsxmlwriter.ioex").toString(), ex.getMessage()));
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}
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}
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private void startHeader() throws java.io.IOException {
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setTag("webRowSet");
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writer.write("<?xml version=\"1.0\"?>\n");
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writer.write("<webRowSet xmlns=\"http://java.sun.com/xml/ns/jdbc\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
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writer.write("xsi:schemaLocation=\"http://java.sun.com/xml/ns/jdbc http://java.sun.com/xml/ns/jdbc/webrowset.xsd\">\n");
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}
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private void endHeader() throws java.io.IOException {
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endTag("webRowSet");
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}
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/**
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*
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*
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* @exception SQLException if a database access error occurs
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*/
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private void writeProperties(WebRowSet caller) throws java.io.IOException {
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beginSection("properties");
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try {
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propString("command", processSpecialCharacters(caller.getCommand()));
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propInteger("concurrency", caller.getConcurrency());
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propString("datasource", caller.getDataSourceName());
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propBoolean("escape-processing",
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caller.getEscapeProcessing());
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try {
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propInteger("fetch-direction", caller.getFetchDirection());
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} catch(SQLException sqle) {
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// it may be the case that fetch direction has not been set
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// fetchDir == 0
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// in that case it will throw a SQLException.
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// To avoid that catch it here
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}
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propInteger("fetch-size", caller.getFetchSize());
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propInteger("isolation-level",
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caller.getTransactionIsolation());
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beginSection("key-columns");
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int[] kc = caller.getKeyColumns();
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for (int i = 0; kc != null && i < kc.length; i++)
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propInteger("column", kc[i]);
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endSection("key-columns");
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//Changed to beginSection and endSection for maps for proper indentation
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beginSection("map");
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Map<String, Class<?>> typeMap = caller.getTypeMap();
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if(typeMap != null) {
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for(Map.Entry<String, Class<?>> mm : typeMap.entrySet()) {
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propString("type", mm.getKey());
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propString("class", mm.getValue().getName());
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}
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}
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endSection("map");
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propInteger("max-field-size", caller.getMaxFieldSize());
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propInteger("max-rows", caller.getMaxRows());
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propInteger("query-timeout", caller.getQueryTimeout());
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propBoolean("read-only", caller.isReadOnly());
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int itype = caller.getType();
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String strType = "";
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if(itype == 1003) {
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strType = "ResultSet.TYPE_FORWARD_ONLY";
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} else if(itype == 1004) {
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strType = "ResultSet.TYPE_SCROLL_INSENSITIVE";
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} else if(itype == 1005) {
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strType = "ResultSet.TYPE_SCROLL_SENSITIVE";
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}
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propString("rowset-type", strType);
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propBoolean("show-deleted", caller.getShowDeleted());
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propString("table-name", caller.getTableName());
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propString("url", caller.getUrl());
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beginSection("sync-provider");
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// Remove the string after "@xxxx"
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// before writing it to the xml file.
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String strProviderInstance = (caller.getSyncProvider()).toString();
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String strProvider = strProviderInstance.substring(0, (caller.getSyncProvider()).toString().indexOf("@"));
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propString("sync-provider-name", strProvider);
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propString("sync-provider-vendor", "Oracle Corporation");
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propString("sync-provider-version", "1.0");
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propInteger("sync-provider-grade", caller.getSyncProvider().getProviderGrade());
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propInteger("data-source-lock", caller.getSyncProvider().getDataSourceLock());
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endSection("sync-provider");
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} catch (SQLException ex) {
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throw new java.io.IOException(MessageFormat.format(resBundle.handleGetObject("wrsxmlwriter.sqlex").toString(), ex.getMessage()));
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}
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endSection("properties");
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}
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/**
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*
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*
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* @exception SQLException if a database access error occurs
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*/
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private void writeMetaData(WebRowSet caller) throws java.io.IOException {
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int columnCount;
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beginSection("metadata");
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try {
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ResultSetMetaData rsmd = caller.getMetaData();
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columnCount = rsmd.getColumnCount();
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propInteger("column-count", columnCount);
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for (int colIndex = 1; colIndex <= columnCount; colIndex++) {
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beginSection("column-definition");
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propInteger("column-index", colIndex);
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propBoolean("auto-increment", rsmd.isAutoIncrement(colIndex));
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propBoolean("case-sensitive", rsmd.isCaseSensitive(colIndex));
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propBoolean("currency", rsmd.isCurrency(colIndex));
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propInteger("nullable", rsmd.isNullable(colIndex));
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propBoolean("signed", rsmd.isSigned(colIndex));
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propBoolean("searchable", rsmd.isSearchable(colIndex));
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propInteger("column-display-size",rsmd.getColumnDisplaySize(colIndex));
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propString("column-label", rsmd.getColumnLabel(colIndex));
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propString("column-name", rsmd.getColumnName(colIndex));
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propString("schema-name", rsmd.getSchemaName(colIndex));
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propInteger("column-precision", rsmd.getPrecision(colIndex));
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propInteger("column-scale", rsmd.getScale(colIndex));
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propString("table-name", rsmd.getTableName(colIndex));
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propString("catalog-name", rsmd.getCatalogName(colIndex));
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propInteger("column-type", rsmd.getColumnType(colIndex));
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propString("column-type-name", rsmd.getColumnTypeName(colIndex));
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endSection("column-definition");
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}
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} catch (SQLException ex) {
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throw new java.io.IOException(MessageFormat.format(resBundle.handleGetObject("wrsxmlwriter.sqlex").toString(), ex.getMessage()));
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}
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endSection("metadata");
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}
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/**
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*
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*
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* @exception SQLException if a database access error occurs
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*/
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private void writeData(WebRowSet caller) throws java.io.IOException {
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ResultSet rs;
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try {
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ResultSetMetaData rsmd = caller.getMetaData();
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int columnCount = rsmd.getColumnCount();
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int i;
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beginSection("data");
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caller.beforeFirst();
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caller.setShowDeleted(true);
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while (caller.next()) {
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if (caller.rowDeleted() && caller.rowInserted()) {
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beginSection("modifyRow");
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} else if (caller.rowDeleted()) {
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beginSection("deleteRow");
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} else if (caller.rowInserted()) {
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beginSection("insertRow");
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} else {
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beginSection("currentRow");
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}
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for (i = 1; i <= columnCount; i++) {
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if (caller.columnUpdated(i)) {
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rs = caller.getOriginalRow();
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rs.next();
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beginTag("columnValue");
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writeValue(i, (RowSet)rs);
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endTag("columnValue");
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beginTag("updateRow");
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writeValue(i, caller);
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endTag("updateRow");
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} else {
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beginTag("columnValue");
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writeValue(i, caller);
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endTag("columnValue");
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}
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}
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endSection(); // this is unchecked
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}
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endSection("data");
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} catch (SQLException ex) {
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throw new java.io.IOException(MessageFormat.format(resBundle.handleGetObject("wrsxmlwriter.sqlex").toString(), ex.getMessage()));
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}
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}
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private void writeValue(int idx, RowSet caller) throws java.io.IOException {
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try {
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int type = caller.getMetaData().getColumnType(idx);
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switch (type) {
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case java.sql.Types.BIT:
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case java.sql.Types.BOOLEAN:
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boolean b = caller.getBoolean(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeBoolean(b);
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break;
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case java.sql.Types.TINYINT:
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case java.sql.Types.SMALLINT:
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short s = caller.getShort(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeShort(s);
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break;
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case java.sql.Types.INTEGER:
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int i = caller.getInt(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeInteger(i);
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break;
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case java.sql.Types.BIGINT:
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long l = caller.getLong(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeLong(l);
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break;
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case java.sql.Types.REAL:
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case java.sql.Types.FLOAT:
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float f = caller.getFloat(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeFloat(f);
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break;
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case java.sql.Types.DOUBLE:
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double d = caller.getDouble(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeDouble(d);
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break;
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case java.sql.Types.NUMERIC:
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case java.sql.Types.DECIMAL:
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writeBigDecimal(caller.getBigDecimal(idx));
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break;
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case java.sql.Types.BINARY:
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case java.sql.Types.VARBINARY:
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case java.sql.Types.LONGVARBINARY:
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break;
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case java.sql.Types.DATE:
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java.sql.Date date = caller.getDate(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeLong(date.getTime());
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break;
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case java.sql.Types.TIME:
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java.sql.Time time = caller.getTime(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeLong(time.getTime());
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break;
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case java.sql.Types.TIMESTAMP:
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java.sql.Timestamp ts = caller.getTimestamp(idx);
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if (caller.wasNull())
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writeNull();
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else
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writeLong(ts.getTime());
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break;
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case java.sql.Types.CHAR:
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case java.sql.Types.VARCHAR:
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case java.sql.Types.LONGVARCHAR:
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writeStringData(caller.getString(idx));
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break;
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default:
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System.out.println(resBundle.handleGetObject("wsrxmlwriter.notproper").toString());
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//Need to take care of BLOB, CLOB, Array, Ref here
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}
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} catch (SQLException ex) {
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throw new java.io.IOException(resBundle.handleGetObject("wrsxmlwriter.failedwrite").toString()+ ex.getMessage());
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}
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}
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/*
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* This begins a new tag with a indent
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*
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*/
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private void beginSection(String tag) throws java.io.IOException {
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// store the current tag
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setTag(tag);
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writeIndent(stack.size());
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// write it out
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writer.write("<" + tag + ">\n");
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}
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/*
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* This closes a tag started by beginTag with a indent
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*
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*/
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private void endSection(String tag) throws java.io.IOException {
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writeIndent(stack.size());
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String beginTag = getTag();
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if(beginTag.indexOf("webRowSet") != -1) {
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beginTag ="webRowSet";
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}
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if (tag.equals(beginTag) ) {
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// get the current tag and write it out
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writer.write("</" + beginTag + ">\n");
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} else {
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;
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}
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writer.flush();
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}
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private void endSection() throws java.io.IOException {
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writeIndent(stack.size());
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// get the current tag and write it out
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String beginTag = getTag();
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writer.write("</" + beginTag + ">\n");
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writer.flush();
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}
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private void beginTag(String tag) throws java.io.IOException {
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// store the current tag
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setTag(tag);
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writeIndent(stack.size());
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// write tag out
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writer.write("<" + tag + ">");
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}
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private void endTag(String tag) throws java.io.IOException {
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String beginTag = getTag();
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if (tag.equals(beginTag)) {
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// get the current tag and write it out
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writer.write("</" + beginTag + ">\n");
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} else {
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;
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}
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writer.flush();
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}
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private void emptyTag(String tag) throws java.io.IOException {
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// write an emptyTag
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writer.write("<" + tag + "/>");
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}
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private void setTag(String tag) {
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// add the tag to stack
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stack.push(tag);
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|
}
|
|
|
|
private String getTag() {
|
|
return stack.pop();
|
|
}
|
|
|
|
private void writeNull() throws java.io.IOException {
|
|
emptyTag("null");
|
|
}
|
|
|
|
private void writeStringData(String s) throws java.io.IOException {
|
|
if (s == null) {
|
|
writeNull();
|
|
} else if (s.equals("")) {
|
|
writeEmptyString();
|
|
} else {
|
|
|
|
s = processSpecialCharacters(s);
|
|
|
|
writer.write(s);
|
|
}
|
|
}
|
|
|
|
private void writeString(String s) throws java.io.IOException {
|
|
if (s != null) {
|
|
writer.write(s);
|
|
} else {
|
|
writeNull();
|
|
}
|
|
}
|
|
|
|
|
|
private void writeShort(short s) throws java.io.IOException {
|
|
writer.write(Short.toString(s));
|
|
}
|
|
|
|
private void writeLong(long l) throws java.io.IOException {
|
|
writer.write(Long.toString(l));
|
|
}
|
|
|
|
private void writeInteger(int i) throws java.io.IOException {
|
|
writer.write(Integer.toString(i));
|
|
}
|
|
|
|
private void writeBoolean(boolean b) throws java.io.IOException {
|
|
writer.write(Boolean.valueOf(b).toString());
|
|
}
|
|
|
|
private void writeFloat(float f) throws java.io.IOException {
|
|
writer.write(Float.toString(f));
|
|
}
|
|
|
|
private void writeDouble(double d) throws java.io.IOException {
|
|
writer.write(Double.toString(d));
|
|
}
|
|
|
|
private void writeBigDecimal(java.math.BigDecimal bd) throws java.io.IOException {
|
|
if (bd != null)
|
|
writer.write(bd.toString());
|
|
else
|
|
emptyTag("null");
|
|
}
|
|
|
|
private void writeIndent(int tabs) throws java.io.IOException {
|
|
// indent...
|
|
for (int i = 1; i < tabs; i++) {
|
|
writer.write(" ");
|
|
}
|
|
}
|
|
|
|
private void propString(String tag, String s) throws java.io.IOException {
|
|
beginTag(tag);
|
|
writeString(s);
|
|
endTag(tag);
|
|
}
|
|
|
|
private void propInteger(String tag, int i) throws java.io.IOException {
|
|
beginTag(tag);
|
|
writeInteger(i);
|
|
endTag(tag);
|
|
}
|
|
|
|
private void propBoolean(String tag, boolean b) throws java.io.IOException {
|
|
beginTag(tag);
|
|
writeBoolean(b);
|
|
endTag(tag);
|
|
}
|
|
|
|
private void writeEmptyString() throws java.io.IOException {
|
|
emptyTag("emptyString");
|
|
}
|
|
/**
|
|
* Purely for code coverage purposes..
|
|
*/
|
|
public boolean writeData(RowSetInternal caller) {
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* This function has been added for the processing of special characters
|
|
* lik <,>,'," and & in the data to be serialized. These have to be taken
|
|
* of specifically or else there will be parsing error while trying to read
|
|
* the contents of the XML file.
|
|
**/
|
|
|
|
private String processSpecialCharacters(String s) {
|
|
|
|
if(s == null) {
|
|
return null;
|
|
}
|
|
char []charStr = s.toCharArray();
|
|
String specialStr = "";
|
|
|
|
for(int i = 0; i < charStr.length; i++) {
|
|
if(charStr[i] == '&') {
|
|
specialStr = specialStr.concat("&");
|
|
} else if(charStr[i] == '<') {
|
|
specialStr = specialStr.concat("<");
|
|
} else if(charStr[i] == '>') {
|
|
specialStr = specialStr.concat(">");
|
|
} else if(charStr[i] == '\'') {
|
|
specialStr = specialStr.concat("'");
|
|
} else if(charStr[i] == '\"') {
|
|
specialStr = specialStr.concat(""");
|
|
} else {
|
|
specialStr = specialStr.concat(String.valueOf(charStr[i]));
|
|
}
|
|
}
|
|
|
|
s = specialStr;
|
|
return s;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method re populates the resBundle
|
|
* during the deserialization process
|
|
*
|
|
*/
|
|
private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
|
|
// Default state initialization happens here
|
|
ois.defaultReadObject();
|
|
// Initialization of transient Res Bundle happens here .
|
|
try {
|
|
resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
|
|
} catch(IOException ioe) {
|
|
throw new RuntimeException(ioe);
|
|
}
|
|
|
|
}
|
|
|
|
static final long serialVersionUID = 7163134986189677641L;
|
|
}
|