/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.rowset.internal;
import java.sql.*;
import javax.sql.*;
import java.io.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import javax.xml.parsers.*;
import com.sun.rowset.*;
import java.text.MessageFormat;
import javax.sql.rowset.*;
import javax.sql.rowset.spi.*;
An implementation of the XmlReader interface, which
reads and parses an XML formatted WebRowSet object.
This implementation uses an org.xml.sax.Parser object
as its parser.
/**
* An implementation of the <code>XmlReader</code> interface, which
* reads and parses an XML formatted <code>WebRowSet</code> object.
* This implementation uses an <code>org.xml.sax.Parser</code> object
* as its parser.
*/
public class WebRowSetXmlReader implements XmlReader, Serializable {
private JdbcRowSetResourceBundle resBundle;
public WebRowSetXmlReader(){
try {
resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
} catch(IOException ioe) {
throw new RuntimeException(ioe);
}
}
Parses the given WebRowSet object, getting its input from
the given java.io.Reader object. The parser will send
notifications of parse events to the rowset's
XmlReaderDocHandler, which will build the rowset as
an XML document.
This method is called internally by the method
WebRowSet.readXml.
If a parsing error occurs, the exception thrown will include
information for locating the error in the original XML document.
Params: - caller – the
WebRowSet object to be parsed, whose
xmlReader field must contain a reference to
this XmlReader object - reader – the
java.io.Reader object from which
the parser will get its input
Throws: - SQLException – if a database access error occurs or
this
WebRowSetXmlReader object is not the
reader for the given rowset
See Also:
/**
* Parses the given <code>WebRowSet</code> object, getting its input from
* the given <code>java.io.Reader</code> object. The parser will send
* notifications of parse events to the rowset's
* <code>XmlReaderDocHandler</code>, which will build the rowset as
* an XML document.
* <P>
* This method is called internally by the method
* <code>WebRowSet.readXml</code>.
* <P>
* If a parsing error occurs, the exception thrown will include
* information for locating the error in the original XML document.
*
* @param caller the <code>WebRowSet</code> object to be parsed, whose
* <code>xmlReader</code> field must contain a reference to
* this <code>XmlReader</code> object
* @param reader the <code>java.io.Reader</code> object from which
* the parser will get its input
* @exception SQLException if a database access error occurs or
* this <code>WebRowSetXmlReader</code> object is not the
* reader for the given rowset
* @see XmlReaderContentHandler
*/
public void readXML(WebRowSet caller, java.io.Reader reader) throws SQLException {
try {
// Crimson Parser(as in J2SE 1.4.1 is NOT able to handle
// Reader(s)(FileReader).
//
// But getting the file as a Stream works fine. So we are going to take
// the reader but send it as a InputStream to the parser. Note that this
// functionality needs to work against any parser
// Crimson(J2SE 1.4.x) / Xerces(J2SE 1.5.x).
InputSource is = new InputSource(reader);
DefaultHandler dh = new XmlErrorHandler();
XmlReaderContentHandler hndr = new XmlReaderContentHandler((RowSet)caller);
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
factory.setValidating(true);
SAXParser parser = factory.newSAXParser() ;
parser.setProperty(
"http://java.sun.com/xml/jaxp/properties/schemaLanguage", "http://www.w3.org/2001/XMLSchema");
XMLReader reader1 = parser.getXMLReader() ;
reader1.setEntityResolver(new XmlResolver());
reader1.setContentHandler(hndr);
reader1.setErrorHandler(dh);
reader1.parse(is);
} catch (SAXParseException err) {
System.out.println (MessageFormat.format(resBundle.handleGetObject("wrsxmlreader.parseerr").toString(), new Object[]{ err.getMessage (), err.getLineNumber(), err.getSystemId()}));
err.printStackTrace();
throw new SQLException(err.getMessage());
} catch (SAXException e) {
Exception x = e;
if (e.getException () != null)
x = e.getException();
x.printStackTrace ();
throw new SQLException(x.getMessage());
}
// Will be here if trying to write beyond the RowSet limits
catch (ArrayIndexOutOfBoundsException aie) {
throw new SQLException(resBundle.handleGetObject("wrsxmlreader.invalidcp").toString());
}
catch (Throwable e) {
throw new SQLException(MessageFormat.format(resBundle.handleGetObject("wrsxmlreader.readxml").toString() , e.getMessage()));
}
}
Parses the given WebRowSet object, getting its input from
the given java.io.InputStream object. The parser will send
notifications of parse events to the rowset's
XmlReaderDocHandler, which will build the rowset as
an XML document.
Using streams is a much faster way than using java.io.Reader
This method is called internally by the method
WebRowSet.readXml.
If a parsing error occurs, the exception thrown will include
information for locating the error in the original XML document.
Params: - caller – the
WebRowSet object to be parsed, whose
xmlReader field must contain a reference to
this XmlReader object - iStream – the
java.io.InputStream object from which
the parser will get its input
Throws: - SQLException – if a database access error occurs or
this
WebRowSetXmlReader object is not the
reader for the given rowset
See Also:
/**
* Parses the given <code>WebRowSet</code> object, getting its input from
* the given <code>java.io.InputStream</code> object. The parser will send
* notifications of parse events to the rowset's
* <code>XmlReaderDocHandler</code>, which will build the rowset as
* an XML document.
* <P>
* Using streams is a much faster way than using <code>java.io.Reader</code>
* <P>
* This method is called internally by the method
* <code>WebRowSet.readXml</code>.
* <P>
* If a parsing error occurs, the exception thrown will include
* information for locating the error in the original XML document.
*
* @param caller the <code>WebRowSet</code> object to be parsed, whose
* <code>xmlReader</code> field must contain a reference to
* this <code>XmlReader</code> object
* @param iStream the <code>java.io.InputStream</code> object from which
* the parser will get its input
* @throws SQLException if a database access error occurs or
* this <code>WebRowSetXmlReader</code> object is not the
* reader for the given rowset
* @see XmlReaderContentHandler
*/
public void readXML(WebRowSet caller, java.io.InputStream iStream) throws SQLException {
try {
InputSource is = new InputSource(iStream);
DefaultHandler dh = new XmlErrorHandler();
XmlReaderContentHandler hndr = new XmlReaderContentHandler((RowSet)caller);
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
factory.setValidating(true);
SAXParser parser = factory.newSAXParser() ;
parser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage",
"http://www.w3.org/2001/XMLSchema");
XMLReader reader1 = parser.getXMLReader() ;
reader1.setEntityResolver(new XmlResolver());
reader1.setContentHandler(hndr);
reader1.setErrorHandler(dh);
reader1.parse(is);
} catch (SAXParseException err) {
System.out.println (MessageFormat.format(resBundle.handleGetObject("wrsxmlreader.parseerr").toString(), new Object[]{err.getLineNumber(), err.getSystemId() }));
System.out.println(" " + err.getMessage ());
err.printStackTrace();
throw new SQLException(err.getMessage());
} catch (SAXException e) {
Exception x = e;
if (e.getException () != null)
x = e.getException();
x.printStackTrace ();
throw new SQLException(x.getMessage());
}
// Will be here if trying to write beyond the RowSet limits
catch (ArrayIndexOutOfBoundsException aie) {
throw new SQLException(resBundle.handleGetObject("wrsxmlreader.invalidcp").toString());
}
catch (Throwable e) {
throw new SQLException(MessageFormat.format(resBundle.handleGetObject("wrsxmlreader.readxml").toString() , e.getMessage()));
}
}
For code coverage purposes only right now
/**
* For code coverage purposes only right now
*
*/
public void readData(RowSetInternal caller) {
}
This method re populates the resBundle
during the deserialization process
/**
* 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 = -9127058392819008014L;
}