/**
* 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.lucene.gdata.gom.core;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import org.apache.lucene.gdata.gom.GOMNamespace;
import org.apache.lucene.gdata.gom.writer.GOMOutputWriter;
/**
* @author Simon Willnauer
*
*/
public class SimpleGOMElementImpl extends AbstractGOMElement {
public static final String ELEMENT_OS_ITEMS_PER_PAGE = "itemsPerPage";
public static final String ELEMENT_OS_START_INDEX = "startIndex";
private SimpleValidator validator;
/**
*
*/
public SimpleGOMElementImpl(String aLocalName, GOMNamespace aNamespace) {
super();
if (aLocalName == null)
throw new IllegalArgumentException("localname must not be null");
if (aNamespace == null)
throw new IllegalArgumentException("Namespace must not be null");
this.localName = aLocalName;
this.qname = new QName(aNamespace.getNamespaceUri(), this.localName,
aNamespace.getNamespacePrefix());
}
SimpleGOMElementImpl() {
// for subclasses
}
/**
* @see org.apache.lucene.gdata.gom.core.AbstractGOMElement#processElementValue(java.lang.String)
*/
@Override
public void processElementValue(String aValue) {
if (this.textValue != null)
throw new GDataParseException(String.format(
AtomParser.DUPLICATE_ELEMENT_VALUE, this.localName));
this.textValue = aValue;
}
/**
* @see org.apache.lucene.gdata.gom.core.AbstractGOMElement#processEndElement()
*/
@Override
public void processEndElement() {
if (this.validator != null)
this.validator.validate(this.textValue);
}
/**
* @see org.apache.lucene.gdata.gom.GOMElement#writeAtomOutput(org.apache.lucene.gdata.gom.writer.GOMStaxWriter)
*/
public void writeAtomOutput(GOMOutputWriter aStreamWriter)
throws XMLStreamException {
aStreamWriter.writeSimpleXMLElement(this.qname,
getXmlNamespaceAttributes(), this.textValue);
}
/**
* @see org.apache.lucene.gdata.gom.GOMElement#writeRssOutput(org.apache.lucene.gdata.gom.writer.GOMStaxWriter)
*/
public void writeRssOutput(GOMOutputWriter aStreamWriter)
throws XMLStreamException {
writeAtomOutput(aStreamWriter);
}
protected abstract static class SimpleValidator {
String localName;
protected SimpleValidator(String aLocalName) {
this.localName = aLocalName;
}
/**
* @param aTextValue
*/
protected void validate(String aTextValue) {
if (aTextValue == null)
throw new GDataParseException(String.format(
AtomParser.MISSING_ELEMENT_VALUE_PLAIN,
this.localName));
}
}
/**
* @param aValidator
* The validator to set.
*/
public void setValidator(SimpleValidator aValidator) {
validator = aValidator;
}
}
|