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Cayenne Object Persistence Framework
/*****************************************************************
* 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.cayenne.util;
import java.io.PrintWriter;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
/**
* A helper class to encode objects to XML.
*
* @since 1.1
* @author Andrei Adamchik
*/
public class XMLEncoder {
protected String indent;
protected PrintWriter out;
protected boolean indentLine;
protected int indentTimes;
public XMLEncoder(PrintWriter out) {
this.out = out;
}
public XMLEncoder(PrintWriter out, String indent) {
this.indent = indent;
this.out = out;
}
public PrintWriter getPrintWriter() {
return out;
}
public void indent(int i) {
indentTimes += i;
if (indentTimes < 0) {
indentTimes = 0;
}
}
/**
* Utility method that prints all map values,
* assuming they are XMLSerializable objects.
*/
public void print(Map map) {
Iterator it = map.entrySet().iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
((XMLSerializable) entry.getValue()).encodeAsXML(this);
}
}
/**
* Utility method that prints all map values,
* assuming they are XMLSerializable objects.
*/
public void print(Collection c) {
Iterator it = c.iterator();
while (it.hasNext()) {
((XMLSerializable) it.next()).encodeAsXML(this);
}
}
/**
* Prints a common XML element - property with name and value.
*/
public void printProperty(String name, String value) {
printIndent();
out.print(" ");
indentLine = true;
}
/**
* Prints a common XML element - property with name and value.
*/
public void printProperty(String name, boolean b) {
printProperty(name, String.valueOf(b));
}
/**
* Prints a common XML element - property with name and value.
*/
public void printProperty(String name, int i) {
printProperty(name, String.valueOf(i));
}
public void print(String text) {
printIndent();
out.print(text);
}
public void print(char c) {
printIndent();
out.print(c);
}
public void print(boolean b) {
printIndent();
out.print(b);
}
public void print(int i) {
printIndent();
out.print(i);
}
public void println(String text) {
printIndent();
out.println(text);
indentLine = true;
}
public void println(char c) {
printIndent();
out.println(c);
indentLine = true;
}
private void printIndent() {
if (indentLine) {
indentLine = false;
if (indentTimes > 0 && indent != null) {
for (int i = 0; i < indentTimes; i++) {
out.print(indent);
}
}
}
}
}
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