/* ========================================================================
* JCommon : a free general purpose class library for the Java(tm) platform
* ========================================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ----------------
* ModelWriter.java
* ----------------
* (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
*
* Original Author: Thomas Morgner;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* $Id: ModelWriter.java,v 1.2 2004/09/10 13:41:52 mungady Exp $
*
* Changes
* -------------------------
* 21.06.2003 : Initial version
*
*/
package org.jfree.xml.generator;
import java.io.IOException;
import java.io.Writer;
import org.jfree.xml.generator.model.ClassDescription;
import org.jfree.xml.generator.model.Comments;
import org.jfree.xml.generator.model.DescriptionModel;
import org.jfree.xml.generator.model.IgnoredPropertyInfo;
import org.jfree.xml.generator.model.ManualMappingInfo;
import org.jfree.xml.generator.model.MultiplexMappingInfo;
import org.jfree.xml.generator.model.PropertyInfo;
import org.jfree.xml.generator.model.PropertyType;
import org.jfree.xml.generator.model.TypeInfo;
import org.jfree.xml.util.ClassModelTags;
import org.jfree.xml.writer.AttributeList;
import org.jfree.xml.writer.SafeTagList;
import org.jfree.xml.writer.XMLWriterSupport;
/**
* A model writer.
*/
public class ModelWriter {
/** The tags that can be split. */
private static SafeTagList safeTags;
/**
* Returns the safe tag list.
*
* @return The safe tag list.
*/
public static SafeTagList getSafeTags() {
if (safeTags == null) {
safeTags = new SafeTagList();
safeTags.add(ClassModelTags.OBJECTS_TAG);
safeTags.add(ClassModelTags.OBJECT_TAG);
safeTags.add(ClassModelTags.CONSTRUCTOR_TAG);
safeTags.add(ClassModelTags.ELEMENT_PROPERTY_TAG);
safeTags.add(ClassModelTags.LOOKUP_PROPERTY_TAG);
safeTags.add(ClassModelTags.ATTRIBUTE_PROPERTY_TAG);
safeTags.add(ClassModelTags.PARAMETER_TAG);
safeTags.add(ClassModelTags.INCLUDE_TAG);
safeTags.add(ClassModelTags.IGNORED_PROPERTY_TAG);
safeTags.add(ClassModelTags.MANUAL_TAG);
safeTags.add(ClassModelTags.MAPPING_TAG);
safeTags.add(ClassModelTags.TYPE_TAG);
}
return safeTags;
}
/** A support class for writing XML tags. */
private XMLWriterSupport writerSupport;
/** A model containing class descriptions. */
private DescriptionModel model;
/**
* Creates a new model writer instance.
*/
public ModelWriter() {
this.writerSupport = new XMLWriterSupport(getSafeTags(), 0);
}
/**
* Returns the model.
*
* @return The model.
*/
public DescriptionModel getModel() {
return this.model;
}
/**
* Sets the model to be written.
*
* @param model the model.
*/
public void setModel(final DescriptionModel model) {
this.model = model;
}
/**
* Writes an XML header.
*
* @param writer the writer.
*
* @throws IOException if there is an I/O problem.
*/
public static void writeXMLHeader(final Writer writer) throws IOException {
writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
writer.write(XMLWriterSupport.getLineSeparator());
}
/**
* Writes a set of comments.
*
* @param writer the writer.
* @param comments a set of comments.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeStandardComment(final Writer writer, final Comments comments) throws IOException {
if ((comments == null) || (comments.getOpenTagComment() == null)) {
writer.write(
"<!-- CVSTag: $Id: ModelWriter.java,v 1.2 2004/09/10 13:41:52 mungady Exp $ "
+ comments + " -->"
);
writer.write(XMLWriterSupport.getLineSeparator());
}
else {
writeComment(writer, comments.getOpenTagComment());
}
}
/**
* Writes a sequence of comments.
*
* @param writer the writer.
* @param comments the comments (<code>null</code> ignored).
*
* @throws IOException if there is an I/O problem.
*/
protected void writeComment(final Writer writer, final String[] comments) throws IOException {
if (comments == null) {
return;
}
for (int i = 0; i < comments.length; i++) {
this.writerSupport.indent(writer, XMLWriterSupport.INDENT_ONLY);
writer.write("<!--");
writer.write(comments[i]);
writer.write("-->");
writer.write(XMLWriterSupport.getLineSeparator());
}
}
/**
* Writes the open comments from a set of comments.
*
* @param writer the writer.
* @param comments the set of comments.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeOpenComment(final Writer writer, final Comments comments) throws IOException {
if (comments == null) {
return;
}
if (comments.getOpenTagComment() == null) {
return;
}
writeComment(writer, comments.getOpenTagComment());
}
/**
* Writes the close comments from a set of comments.
*
* @param writer the writer.
* @param comments the set of comments.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeCloseComment(final Writer writer, final Comments comments) throws IOException {
if (comments == null) {
return;
}
if (comments.getCloseTagComment() == null) {
return;
}
writeComment(writer, comments.getCloseTagComment());
}
/**
* Writes a closed (short) tag with eventually nested comments.
*
* @param writer the writer.
* @param tagName the tag name.
* @param attributes the attributes.
* @param comments the comments.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeTag(final Writer writer,
final String tagName,
final AttributeList attributes,
final Comments comments) throws IOException {
if (comments == null) {
this.writerSupport.writeTag(writer, tagName, attributes, XMLWriterSupport.CLOSE);
}
else {
writeOpenComment(writer, comments);
if (comments.getCloseTagComment() != null) {
this.writerSupport.writeTag(writer, tagName, attributes, XMLWriterSupport.OPEN);
writeCloseComment(writer, comments);
this.writerSupport.writeCloseTag(writer, tagName);
}
else {
this.writerSupport.writeTag(writer, tagName, attributes, XMLWriterSupport.CLOSE);
}
}
}
/**
* Writes a closed (short) tag with eventually nested comments.
*
* @param writer the writer.
* @param tagName the tag name.
* @param attribute the attribute name.
* @param value the attribute value.
* @param comments the comments.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeTag(final Writer writer,
final String tagName,
final String attribute,
final String value,
final Comments comments) throws IOException {
if (comments == null) {
this.writerSupport.writeTag(writer, tagName, attribute, value , XMLWriterSupport.CLOSE);
}
else {
writeOpenComment(writer, comments);
if (comments.getCloseTagComment() != null) {
this.writerSupport.writeTag(
writer, tagName, attribute, value, XMLWriterSupport.OPEN
);
writeCloseComment(writer, comments);
this.writerSupport.writeCloseTag(writer, tagName);
}
else {
this.writerSupport.writeTag(
writer, tagName, attribute, value, XMLWriterSupport.CLOSE
);
}
}
}
/**
* Writes a model to the specified writer.
*
* @param writer the writer.
*
* @throws IOException if there is an I/O problem.
*/
public void write(final Writer writer) throws IOException {
writeStandardComment(writer, this.model.getModelComments());
this.writerSupport.writeTag(writer, ClassModelTags.OBJECTS_TAG);
final String[] sources = this.model.getSources();
for (int i = 0; i < sources.length; i++) {
final Comments comments = this.model.getIncludeComment(sources[i]);
writeTag(
writer,
ClassModelTags.INCLUDE_TAG, ClassModelTags.SOURCE_ATTR, sources[i], comments
);
}
for (int i = 0; i < this.model.size(); i++) {
final ClassDescription cd = this.model.get(i);
writeClassDescription(writer, cd);
}
final ManualMappingInfo[] mappings = getModel().getMappingModel().getManualMapping();
for (int i = 0; i < mappings.length; i++) {
final ManualMappingInfo mi = mappings[i];
writeManualMapping(writer, mi);
}
final MultiplexMappingInfo[] mmappings = getModel().getMappingModel().getMultiplexMapping();
for (int i = 0; i < mmappings.length; i++) {
final MultiplexMappingInfo mi = mmappings[i];
writeMultiplexMapping(writer, mi);
}
writeCloseComment(writer, this.model.getModelComments());
this.writerSupport.writeCloseTag(writer, ClassModelTags.OBJECTS_TAG);
}
/**
* Writes a manual mapping to the XML output.
*
* @param writer the writer.
* @param mi the mapping info.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeManualMapping(final Writer writer, final ManualMappingInfo mi) throws IOException {
final AttributeList al = new AttributeList();
al.setAttribute(ClassModelTags.CLASS_ATTR, mi.getBaseClass().getName());
al.setAttribute(ClassModelTags.READ_HANDLER_ATTR, mi.getReadHandler().getName());
al.setAttribute(ClassModelTags.WRITE_HANDLER_ATTR, mi.getWriteHandler().getName());
writeTag(writer, ClassModelTags.MANUAL_TAG, al, mi.getComments());
}
/**
* Writes a multiplex mapping to the XML output.
*
* @param writer the writer.
* @param mi the mapping info.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeMultiplexMapping(final Writer writer, final MultiplexMappingInfo mi)
throws IOException {
final TypeInfo[] tis = mi.getChildClasses();
final AttributeList al = new AttributeList();
al.setAttribute(ClassModelTags.BASE_CLASS_ATTR, mi.getBaseClass().getName());
al.setAttribute(ClassModelTags.TYPE_ATTR, mi.getTypeAttribute());
getWriterSupport().writeTag(writer, ClassModelTags.MAPPING_TAG, al, XMLWriterSupport.OPEN);
for (int j = 0; j < tis.length; j++) {
final AttributeList tiAttr = new AttributeList();
tiAttr.setAttribute(ClassModelTags.NAME_ATTR, tis[j].getName());
tiAttr.setAttribute(ClassModelTags.CLASS_ATTR, tis[j].getType().getName());
writeTag(writer, ClassModelTags.TYPE_TAG, tiAttr, tis[j].getComments());
}
getWriterSupport().writeCloseTag(writer, ClassModelTags.MAPPING_TAG);
}
/**
* Writes a class description.
*
* @param writer the writer.
* @param cd the class description.
*
* @throws IOException if there is an I/O problem.
*/
protected void writeClassDescription(final Writer writer, final ClassDescription cd) throws IOException {
if (cd.isUndefined()) {
return;
}
final AttributeList al = new AttributeList();
al.setAttribute(ClassModelTags.CLASS_ATTR, cd.getName());
if (cd.getRegisterKey() != null) {
al.setAttribute(ClassModelTags.REGISTER_NAMES_ATTR, cd.getRegisterKey());
}
if (cd.isPreserve()) {
al.setAttribute(ClassModelTags.IGNORE_ATTR, "true");
}
this.writerSupport.writeTag(writer, ClassModelTags.OBJECT_TAG, al, XMLWriterSupport.OPEN);
final TypeInfo[] constructorInfo = cd.getConstructorDescription();
if (constructorInfo != null && constructorInfo.length != 0) {
this.writerSupport.writeTag(writer, ClassModelTags.CONSTRUCTOR_TAG);
for (int i = 0; i < constructorInfo.length; i++) {
final AttributeList constructorList = new AttributeList();
constructorList.setAttribute(
ClassModelTags.CLASS_ATTR, constructorInfo[i].getType().getName()
);
constructorList.setAttribute(
ClassModelTags.PROPERTY_ATTR, constructorInfo[i].getName()
);
writeTag(writer, ClassModelTags.PARAMETER_TAG, constructorList,
constructorInfo[i].getComments());
}
this.writerSupport.writeCloseTag(writer, ClassModelTags.CONSTRUCTOR_TAG);
}
final PropertyInfo[] properties = cd.getProperties();
for (int i = 0; i < properties.length; i++) {
writePropertyInfo(writer, properties[i]);
}
this.writerSupport.writeCloseTag(writer, ClassModelTags.OBJECT_TAG);
}
/**
* Writes a property info element.
*
* @param writer the writer.
* @param ipi the property info.
*
* @throws IOException if there is an I/O problem.
*/
private void writePropertyInfo(final Writer writer, final PropertyInfo ipi) throws IOException {
final AttributeList props = new AttributeList();
props.setAttribute(ClassModelTags.NAME_ATTR, ipi.getName());
if (ipi instanceof IgnoredPropertyInfo) {
writeTag(writer, ClassModelTags.IGNORED_PROPERTY_TAG, props, ipi.getComments());
return;
}
if (ipi.getPropertyType().equals(PropertyType.ATTRIBUTE)) {
props.setAttribute(ClassModelTags.ATTRIBUTE_ATTR, ipi.getXmlName());
props.setAttribute(ClassModelTags.ATTRIBUTE_HANDLER_ATTR, ipi.getXmlHandler());
writeTag(writer, ClassModelTags.ATTRIBUTE_PROPERTY_TAG, props, ipi.getComments());
}
else if (ipi.getPropertyType().equals(PropertyType.ELEMENT)) {
if (ipi.getComments() == null || ipi.getComments().getOpenTagComment() == null)
{
this.writerSupport.indent(writer, XMLWriterSupport.INDENT_ONLY);
writer.write("<!-- property type is " + ipi.getType() + " -->");
writer.write(System.getProperty("line.separator", "\n"));
}
props.setAttribute(ClassModelTags.ELEMENT_ATTR, ipi.getXmlName());
writeTag(writer, ClassModelTags.ELEMENT_PROPERTY_TAG, props, ipi.getComments());
}
else {
props.setAttribute(ClassModelTags.LOOKUP_ATTR, ipi.getXmlName());
writeTag(writer, ClassModelTags.LOOKUP_PROPERTY_TAG, props, ipi.getComments());
}
}
/**
* Returns the writer support object.
*
* @return The writer support object.
*/
public XMLWriterSupport getWriterSupport() {
return this.writerSupport;
}
}