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/*
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* Copyright 2003-2006 Sun Microsystems, Inc. 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. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any 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 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 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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java.util.Map typeMap = caller.getTypeMap();
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if (typeMap != null) {
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Iterator i = typeMap.keySet().iterator();
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Class c;
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String type;
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while (i.hasNext()) {
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type = (String)i.next();
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c = (Class)typeMap.get(type);
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propString("type", type);
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propString("class", c.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", "Sun Microsystems Inc.");
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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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311 |
/**
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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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329 |
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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333 |
} 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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339 |
for (i = 1; i <= columnCount; i++) {
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340 |
if (caller.columnUpdated(i)) {
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341 |
rs = caller.getOriginalRow();
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342 |
rs.next();
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343 |
beginTag("columnValue");
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344 |
writeValue(i, (RowSet)rs);
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endTag("columnValue");
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beginTag("updateRow");
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347 |
writeValue(i, caller);
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348 |
endTag("updateRow");
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349 |
} else {
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350 |
beginTag("columnValue");
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351 |
writeValue(i, caller);
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endTag("columnValue");
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353 |
}
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354 |
}
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355 |
|
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356 |
endSection(); // this is unchecked
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357 |
}
|
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358 |
endSection("data");
|
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359 |
} catch (SQLException ex) {
|
|
360 |
throw new java.io.IOException(MessageFormat.format(resBundle.handleGetObject("wrsxmlwriter.sqlex").toString(), ex.getMessage()));
|
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361 |
}
|
|
362 |
}
|
|
363 |
|
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364 |
private void writeValue(int idx, RowSet caller) throws java.io.IOException {
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|
365 |
try {
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366 |
int type = caller.getMetaData().getColumnType(idx);
|
|
367 |
|
|
368 |
switch (type) {
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369 |
case java.sql.Types.BIT:
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370 |
case java.sql.Types.BOOLEAN:
|
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371 |
boolean b = caller.getBoolean(idx);
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372 |
if (caller.wasNull())
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373 |
writeNull();
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374 |
else
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375 |
writeBoolean(b);
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376 |
break;
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377 |
case java.sql.Types.TINYINT:
|
|
378 |
case java.sql.Types.SMALLINT:
|
|
379 |
short s = caller.getShort(idx);
|
|
380 |
if (caller.wasNull())
|
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381 |
writeNull();
|
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382 |
else
|
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383 |
writeShort(s);
|
|
384 |
break;
|
|
385 |
case java.sql.Types.INTEGER:
|
|
386 |
int i = caller.getInt(idx);
|
|
387 |
if (caller.wasNull())
|
|
388 |
writeNull();
|
|
389 |
else
|
|
390 |
writeInteger(caller.getInt(idx));
|
|
391 |
break;
|
|
392 |
case java.sql.Types.BIGINT:
|
|
393 |
long l = caller.getLong(idx);
|
|
394 |
if (caller.wasNull())
|
|
395 |
writeNull();
|
|
396 |
else
|
|
397 |
writeLong(l);
|
|
398 |
break;
|
|
399 |
case java.sql.Types.REAL:
|
|
400 |
case java.sql.Types.FLOAT:
|
|
401 |
float f = caller.getFloat(idx);
|
|
402 |
if (caller.wasNull())
|
|
403 |
writeNull();
|
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404 |
else
|
|
405 |
writeFloat(f);
|
|
406 |
break;
|
|
407 |
case java.sql.Types.DOUBLE:
|
|
408 |
double d = caller.getDouble(idx);
|
|
409 |
if (caller.wasNull())
|
|
410 |
writeNull();
|
|
411 |
else
|
|
412 |
writeDouble(d);
|
|
413 |
break;
|
|
414 |
case java.sql.Types.NUMERIC:
|
|
415 |
case java.sql.Types.DECIMAL:
|
|
416 |
writeBigDecimal(caller.getBigDecimal(idx));
|
|
417 |
break;
|
|
418 |
case java.sql.Types.BINARY:
|
|
419 |
case java.sql.Types.VARBINARY:
|
|
420 |
case java.sql.Types.LONGVARBINARY:
|
|
421 |
break;
|
|
422 |
case java.sql.Types.DATE:
|
|
423 |
java.sql.Date date = caller.getDate(idx);
|
|
424 |
if (caller.wasNull())
|
|
425 |
writeNull();
|
|
426 |
else
|
|
427 |
writeLong(date.getTime());
|
|
428 |
break;
|
|
429 |
case java.sql.Types.TIME:
|
|
430 |
java.sql.Time time = caller.getTime(idx);
|
|
431 |
if (caller.wasNull())
|
|
432 |
writeNull();
|
|
433 |
else
|
|
434 |
writeLong(time.getTime());
|
|
435 |
break;
|
|
436 |
case java.sql.Types.TIMESTAMP:
|
|
437 |
java.sql.Timestamp ts = caller.getTimestamp(idx);
|
|
438 |
if (caller.wasNull())
|
|
439 |
writeNull();
|
|
440 |
else
|
|
441 |
writeLong(ts.getTime());
|
|
442 |
break;
|
|
443 |
case java.sql.Types.CHAR:
|
|
444 |
case java.sql.Types.VARCHAR:
|
|
445 |
case java.sql.Types.LONGVARCHAR:
|
|
446 |
writeStringData(caller.getString(idx));
|
|
447 |
break;
|
|
448 |
default:
|
|
449 |
System.out.println(resBundle.handleGetObject("wsrxmlwriter.notproper").toString());
|
|
450 |
//Need to take care of BLOB, CLOB, Array, Ref here
|
|
451 |
}
|
|
452 |
} catch (SQLException ex) {
|
|
453 |
throw new java.io.IOException(resBundle.handleGetObject("wrsxmlwriter.failedwrite").toString()+ ex.getMessage());
|
|
454 |
}
|
|
455 |
}
|
|
456 |
|
|
457 |
/*
|
|
458 |
* This begins a new tag with a indent
|
|
459 |
*
|
|
460 |
*/
|
|
461 |
private void beginSection(String tag) throws java.io.IOException {
|
|
462 |
// store the current tag
|
|
463 |
setTag(tag);
|
|
464 |
|
|
465 |
writeIndent(stack.size());
|
|
466 |
|
|
467 |
// write it out
|
|
468 |
writer.write("<" + tag + ">\n");
|
|
469 |
}
|
|
470 |
|
|
471 |
/*
|
|
472 |
* This closes a tag started by beginTag with a indent
|
|
473 |
*
|
|
474 |
*/
|
|
475 |
private void endSection(String tag) throws java.io.IOException {
|
|
476 |
writeIndent(stack.size());
|
|
477 |
|
|
478 |
String beginTag = getTag();
|
|
479 |
|
|
480 |
if(beginTag.indexOf("webRowSet") != -1) {
|
|
481 |
beginTag ="webRowSet";
|
|
482 |
}
|
|
483 |
|
|
484 |
if (tag.equals(beginTag) ) {
|
|
485 |
// get the current tag and write it out
|
|
486 |
writer.write("</" + beginTag + ">\n");
|
|
487 |
} else {
|
|
488 |
;
|
|
489 |
}
|
|
490 |
writer.flush();
|
|
491 |
}
|
|
492 |
|
|
493 |
private void endSection() throws java.io.IOException {
|
|
494 |
writeIndent(stack.size());
|
|
495 |
|
|
496 |
// get the current tag and write it out
|
|
497 |
String beginTag = getTag();
|
|
498 |
writer.write("</" + beginTag + ">\n");
|
|
499 |
|
|
500 |
writer.flush();
|
|
501 |
}
|
|
502 |
|
|
503 |
private void beginTag(String tag) throws java.io.IOException {
|
|
504 |
// store the current tag
|
|
505 |
setTag(tag);
|
|
506 |
|
|
507 |
writeIndent(stack.size());
|
|
508 |
|
|
509 |
// write tag out
|
|
510 |
writer.write("<" + tag + ">");
|
|
511 |
}
|
|
512 |
|
|
513 |
private void endTag(String tag) throws java.io.IOException {
|
|
514 |
String beginTag = getTag();
|
|
515 |
if (tag.equals(beginTag)) {
|
|
516 |
// get the current tag and write it out
|
|
517 |
writer.write("</" + beginTag + ">\n");
|
|
518 |
} else {
|
|
519 |
;
|
|
520 |
}
|
|
521 |
writer.flush();
|
|
522 |
}
|
|
523 |
|
|
524 |
private void emptyTag(String tag) throws java.io.IOException {
|
|
525 |
// write an emptyTag
|
|
526 |
writer.write("<" + tag + "/>");
|
|
527 |
}
|
|
528 |
|
|
529 |
private void setTag(String tag) {
|
|
530 |
// add the tag to stack
|
|
531 |
stack.push(tag);
|
|
532 |
}
|
|
533 |
|
|
534 |
private String getTag() {
|
|
535 |
return (String)stack.pop();
|
|
536 |
}
|
|
537 |
|
|
538 |
private void writeNull() throws java.io.IOException {
|
|
539 |
emptyTag("null");
|
|
540 |
}
|
|
541 |
|
|
542 |
private void writeStringData(String s) throws java.io.IOException {
|
|
543 |
if (s == null) {
|
|
544 |
writeNull();
|
|
545 |
} else if (s.equals("")) {
|
|
546 |
writeEmptyString();
|
|
547 |
} else {
|
|
548 |
|
|
549 |
s = processSpecialCharacters(s);
|
|
550 |
|
|
551 |
writer.write(s);
|
|
552 |
}
|
|
553 |
}
|
|
554 |
|
|
555 |
private void writeString(String s) throws java.io.IOException {
|
|
556 |
if (s != null) {
|
|
557 |
writer.write(s);
|
|
558 |
} else {
|
|
559 |
writeNull();
|
|
560 |
}
|
|
561 |
}
|
|
562 |
|
|
563 |
|
|
564 |
private void writeShort(short s) throws java.io.IOException {
|
|
565 |
writer.write(Short.toString(s));
|
|
566 |
}
|
|
567 |
|
|
568 |
private void writeLong(long l) throws java.io.IOException {
|
|
569 |
writer.write(Long.toString(l));
|
|
570 |
}
|
|
571 |
|
|
572 |
private void writeInteger(int i) throws java.io.IOException {
|
|
573 |
writer.write(Integer.toString(i));
|
|
574 |
}
|
|
575 |
|
|
576 |
private void writeBoolean(boolean b) throws java.io.IOException {
|
|
577 |
writer.write(new Boolean(b).toString());
|
|
578 |
}
|
|
579 |
|
|
580 |
private void writeFloat(float f) throws java.io.IOException {
|
|
581 |
writer.write(Float.toString(f));
|
|
582 |
}
|
|
583 |
|
|
584 |
private void writeDouble(double d) throws java.io.IOException {
|
|
585 |
writer.write(Double.toString(d));
|
|
586 |
}
|
|
587 |
|
|
588 |
private void writeBigDecimal(java.math.BigDecimal bd) throws java.io.IOException {
|
|
589 |
if (bd != null)
|
|
590 |
writer.write(bd.toString());
|
|
591 |
else
|
|
592 |
emptyTag("null");
|
|
593 |
}
|
|
594 |
|
|
595 |
private void writeIndent(int tabs) throws java.io.IOException {
|
|
596 |
// indent...
|
|
597 |
for (int i = 1; i < tabs; i++) {
|
|
598 |
writer.write(" ");
|
|
599 |
}
|
|
600 |
}
|
|
601 |
|
|
602 |
private void propString(String tag, String s) throws java.io.IOException {
|
|
603 |
beginTag(tag);
|
|
604 |
writeString(s);
|
|
605 |
endTag(tag);
|
|
606 |
}
|
|
607 |
|
|
608 |
private void propInteger(String tag, int i) throws java.io.IOException {
|
|
609 |
beginTag(tag);
|
|
610 |
writeInteger(i);
|
|
611 |
endTag(tag);
|
|
612 |
}
|
|
613 |
|
|
614 |
private void propBoolean(String tag, boolean b) throws java.io.IOException {
|
|
615 |
beginTag(tag);
|
|
616 |
writeBoolean(b);
|
|
617 |
endTag(tag);
|
|
618 |
}
|
|
619 |
|
|
620 |
private void writeEmptyString() throws java.io.IOException {
|
|
621 |
emptyTag("emptyString");
|
|
622 |
}
|
|
623 |
/**
|
|
624 |
* Purely for code coverage purposes..
|
|
625 |
*/
|
|
626 |
public boolean writeData(RowSetInternal caller) {
|
|
627 |
return false;
|
|
628 |
}
|
|
629 |
|
|
630 |
|
|
631 |
/**
|
|
632 |
* This function has been added for the processing of special characters
|
|
633 |
* lik <,>,'," and & in the data to be serialized. These have to be taken
|
|
634 |
* of specifically or else there will be parsing error while trying to read
|
|
635 |
* the contents of the XML file.
|
|
636 |
**/
|
|
637 |
|
|
638 |
private String processSpecialCharacters(String s) {
|
|
639 |
|
|
640 |
if(s == null) {
|
|
641 |
return null;
|
|
642 |
}
|
|
643 |
char []charStr = s.toCharArray();
|
|
644 |
String specialStr = new String();
|
|
645 |
|
|
646 |
for(int i = 0; i < charStr.length; i++) {
|
|
647 |
if(charStr[i] == '&') {
|
|
648 |
specialStr = specialStr.concat("&");
|
|
649 |
} else if(charStr[i] == '<') {
|
|
650 |
specialStr = specialStr.concat("<");
|
|
651 |
} else if(charStr[i] == '>') {
|
|
652 |
specialStr = specialStr.concat(">");
|
|
653 |
} else if(charStr[i] == '\'') {
|
|
654 |
specialStr = specialStr.concat("'");
|
|
655 |
} else if(charStr[i] == '\"') {
|
|
656 |
specialStr = specialStr.concat(""");
|
|
657 |
} else {
|
|
658 |
specialStr = specialStr.concat(String.valueOf(charStr[i]));
|
|
659 |
}
|
|
660 |
}
|
|
661 |
|
|
662 |
s = specialStr;
|
|
663 |
return s;
|
|
664 |
}
|
|
665 |
|
|
666 |
}
|