/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.spi.commons.value;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.util.Calendar;
import javax.jcr.Binary;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import javax.jcr.ValueFormatException;
import org.apache.jackrabbit.spi.commons.conversion.NamePathResolver;
import org.apache.jackrabbit.spi.QValue;
/**
* A <code>QValueValue</code> provides an implementation
* of the <code>Value</code> interface representing an SPI
* <code>QValue</code>.
*/
public final class QValueValue implements Value {
// wrapped QValue
private final QValue qvalue;
// used for keeping track of input streams that have already been passed back
private InputStream stream = null;
// for converting the internal NAME/PATH format to JCR format
private final NamePathResolver resolver;
/**
* Constructs a <code>QValueValue</code> object representing an SPI
* <code>QValue</code>.
*
* @param qvalue the QValue this <code>QValueValue</code> should represent
* @param resolver fore resolving namespace URIs to prefixes in NAME/PATH properties
*/
public QValueValue(QValue qvalue, NamePathResolver resolver) {
this.qvalue = qvalue;
this.resolver = resolver;
}
/**
* Returns the embedded <code>QValue</code>.
*
* @return the embedded <code>QValue</code>
*/
public QValue getQValue() {
return qvalue;
}
//--------------------------------------------------------------< Value >---
/**
* @see javax.jcr.Value#getBoolean()
*/
public boolean getBoolean() throws RepositoryException {
if (getType() == PropertyType.STRING || getType() == PropertyType.BINARY || getType() == PropertyType.BOOLEAN) {
return Boolean.valueOf(qvalue.getString());
} else {
throw new ValueFormatException("incompatible type " + PropertyType.nameFromValue(qvalue.getType()));
}
}
/**
* @see javax.jcr.Value#getDecimal()
*/
public BigDecimal getDecimal() throws ValueFormatException, IllegalStateException, RepositoryException {
switch (getType()) {
case PropertyType.DECIMAL:
case PropertyType.DOUBLE:
case PropertyType.LONG:
case PropertyType.DATE:
case PropertyType.STRING:
return qvalue.getDecimal();
default:
throw new ValueFormatException("incompatible type " + PropertyType.nameFromValue(qvalue.getType()));
}
}
/**
* @see javax.jcr.Value#getBinary()
*/
public Binary getBinary() throws RepositoryException {
// JCR-2511 Value#getBinary() and #getStream() return internal representation for type PATH and NAME
if (getType() == PropertyType.NAME || getType() == PropertyType.PATH) {
// qualified name/path value needs to be resolved,
// delegate conversion to getString() method
try {
final byte[] value = getString().getBytes("UTF-8");
return new Binary() {
public int read(byte[] b, long position) {
if (position >= value.length) {
return -1;
} else {
int p = (int) position;
int n = Math.min(b.length, value.length - p);
System.arraycopy(value, p, b, 0, n);
return n;
}
}
public InputStream getStream() {
return new ByteArrayInputStream(value);
}
public long getSize() {
return value.length;
}
public void dispose() {
}
};
} catch (UnsupportedEncodingException ex) {
throw new RepositoryException("UTF-8 is not supported", ex);
}
} else {
return qvalue.getBinary();
}
}
/**
* @see javax.jcr.Value#getDate()
*/
public Calendar getDate() throws RepositoryException {
return qvalue.getCalendar();
}
/**
* @see javax.jcr.Value#getDouble()
*/
public double getDouble() throws RepositoryException {
return qvalue.getDouble();
}
/**
* @see javax.jcr.Value#getLong()
*/
public long getLong() throws RepositoryException {
return qvalue.getLong();
}
/**
* @see javax.jcr.Value#getStream()
*/
public InputStream getStream() throws IllegalStateException, RepositoryException {
if (stream == null) {
if (getType() == PropertyType.NAME || getType() == PropertyType.PATH) {
// qualified name/path value needs to be resolved
try {
stream = new ByteArrayInputStream(getString().getBytes("UTF-8"));
} catch (UnsupportedEncodingException ex) {
throw new RepositoryException("UTF-8 is not supported", ex);
}
} else {
stream = qvalue.getStream();
}
}
return stream;
}
/**
* @see javax.jcr.Value#getString()
*/
public String getString() throws RepositoryException {
if (getType() == PropertyType.NAME) {
// qualified name value needs to be resolved
return resolver.getJCRName(qvalue.getName());
} else if (getType() == PropertyType.PATH) {
// qualified path value needs to be resolved
return resolver.getJCRPath(qvalue.getPath());
} else {
return qvalue.getString();
}
}
/**
* @see javax.jcr.Value#getType()
*/
public int getType() {
return qvalue.getType();
}
//-------------------------------------------------------------< Object >---
/**
* @see Object#equals(Object)
*/
@Override
public boolean equals(Object obj) {
if (obj instanceof QValueValue) {
return qvalue.equals(((QValueValue) obj).qvalue);
} else {
return false;
}
}
/**
* @see Object#hashCode()
*/
@Override
public int hashCode() {
return qvalue.hashCode();
}
}