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/*
* Copyright (c) 2007-2009, Dennis M. Sosnoski. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following
* disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of
* JiBX nor the names of its contributors may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jibx.custom.classes;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.jibx.binding.classes.ClassCache;
import org.jibx.runtime.EnumSet;
import org.jibx.runtime.IUnmarshaller;
import org.jibx.runtime.IUnmarshallingContext;
import org.jibx.runtime.JiBXException;
import org.jibx.runtime.impl.UnmarshallingContext;
import org.jibx.util.IClass;
import org.jibx.util.IClassLocator;
import org.jibx.util.StringArray;
/**
* Global customization information. This includes some options specific to the <binding> element of the definition,
* as well as controls for structuring of the generated binding(s). It handles the binding customization child elements
* directly, by invoking the abstract unmarshallers for the child elements to process the content. It also allows for
* extension elements which are not part of the binding customization structure, as long as the binding in use defines
* the unmarshalling for these elements.
*
* @author Dennis M. Sosnoski
*/
public class GlobalCustom extends NestingBase
{
/** Enumeration of allowed attribute names */
public static final StringArray s_allowedAttributes =
new StringArray(new String[] { "add-constructors", "direction", "force-classes", "track-source" },
NestingBase.s_allowedAttributes);
/** Element name in XML customization file. */
public static final String ELEMENT_NAME = "custom";
//
// Value set information
public static final int IN_BINDING = 0;
public static final int OUT_BINDING = 1;
public static final int BOTH_BINDING = 2;
/* package */static final EnumSet s_directionEnum =
new EnumSet(IN_BINDING, new String[] { "input", "output", "both" });
//
// Instance data
// structure for package hierarchy
private Map m_packageMap;
// class locator
private final IClassLocator m_classLocator;
// extension elements
private List m_extensionChildren;
// values applied directly to element (or to structure)
private boolean m_addConstructors;
private boolean m_forceClasses;
private boolean m_trackSource;
private boolean m_namespaceModular;
private boolean m_isInput;
private boolean m_isOutput;
private ArrayList m_unmarshalledClasses;
/**
* Constructor with class locator supplied.
*
* @param loc Class Locator
*/
public GlobalCustom(IClassLocator loc) {
super(null);
m_packageMap = new HashMap();
m_classLocator = loc;
PackageCustom dflt = new PackageCustom("", "", this);
m_packageMap.put("", dflt);
m_isInput = true;
m_isOutput = true;
m_unmarshalledClasses = new ArrayList();
}
/**
* Constructor. This always creates the default package as the only direct child, since other packages will be
* treated as children of the default package.
*/
public GlobalCustom() {
this(new ClassCache.ClassCacheLocator());
}
/**
* Make sure all attributes are defined.
*
* @param uctx unmarshalling context
*/
private void preSet(IUnmarshallingContext uctx) {
validateAttributes(uctx, s_allowedAttributes);
}
/**
* Get global customizations root.
*
* @return global customization
*/
public GlobalCustom getGlobal() {
return this;
}
/**
* Get list of unmarshalled classes. This list is populated by the custom unmarshalling code as the customizations
* document is unmarshalled.
*
* @return list
*/
public ArrayList getUnmarshalledClasses() {
return m_unmarshalledClasses;
}
//
// Access methods for values applied only at top level
/**
* Get 'add-constructors' setting.
*
* @return 'add-constructors' value
*/
public boolean isAddConstructors() {
return m_addConstructors;
}
/**
* Set 'add-constructors' value.
*
* @param add 'add-constructors' value
*/
public void setAddConstructors(boolean add) {
m_addConstructors = add;
}
/**
* Get 'force-classes' setting.
*
* @return 'force-classes' value
*/
public boolean isForceClasses() {
return m_forceClasses;
}
/**
* Set 'force-classes' value.
*
* @param force 'force-classes' value
*/
public void setForceClasses(boolean force) {
m_forceClasses = force;
}
/**
* Get 'track-source' attribute value.
*
* @return 'track-source' value
*/
public boolean isTrackSource() {
return m_trackSource;
}
/**
* Set 'track-source' value.
*
* @param track 'track-source' value
*/
public void setTrackSource(boolean track) {
m_trackSource = track;
}
/**
* Check for an input binding.
*
* @return input flag
*/
public boolean isInput() {
return m_isInput;
}
/**
* Set input binding flag.
*
* @param input Flag
*/
public void setInput(boolean input) {
m_isInput = input;
}
/**
* Check for an output binding.
*
* @return output flag
*/
public boolean isOutput() {
return m_isOutput;
}
/**
* Set output binding falg.
*
* @param output Flag
*/
public void setOutput(boolean output) {
m_isOutput = output;
}
/**
* Get class locator.
*
* @return locator
*/
protected IClassLocator getClassLocator() {
return m_classLocator;
}
/**
* Get class information.
*
* @param type fully-qualified class name
* @return information, or null if unable to load
*/
public IClass getClassInfo(String type) {
return m_classLocator.getClassInfo(type);
}
/**
* Get the extension elements used in this customization. This does not include the <package> or <class> child
* elements, which are added directly to the customization structures.
*
* @return child list
*/
public List getExtensionChildren() {
if (m_extensionChildren == null) {
return Collections.EMPTY_LIST;
} else {
return m_extensionChildren;
}
}
/**
* Internal method used during unmarshalling to add a child extension element.
*
* @param child Extension
*/
protected void internalAddExtensionChild(Object child) {
if (m_extensionChildren == null) {
m_extensionChildren = new ArrayList();
}
m_extensionChildren.add(child);
}
/**
* Add a child extension element. This both adds the child to the list and invokes the extension element's
* {@link IApply#apply(IClassLocator)} method, if present.
*
* @param child Extension
*/
public void addExtensionChild(Object child) {
internalAddExtensionChild(child);
if (child instanceof IApply) {
((IApply)child).apply(m_classLocator);
}
}
/**
* Check if a class is included in the customization information. This method does not alter the structures in any
* way, it only checks if the class customization information is part of the existing structure.
*
* @param type fully qualified class name
* @return true if class includes, false if not
*/
public boolean isClassUsed(String type) {
int split = type.lastIndexOf('.');
PackageCustom pack = (PackageCustom)m_packageMap.get(split < 0 ? "" : type.substring(0, split));
if (pack == null) {
return false;
} else {
return pack.getClassCustomization(type.substring(split + 1)) != null;
}
}
/**
* Get class customization information.
*
* @param type fully qualified class name
* @return class information (null if not defined)
*/
public ClassCustom getClassCustomization(String type) {
int split = type.lastIndexOf('.');
PackageCustom pack = (PackageCustom)m_packageMap.get(split < 0 ? "" : type.substring(0, split));
if (pack == null) {
return null;
} else {
return pack.getClassCustomization(type.substring(split + 1));
}
}
/**
* Build new class customization information. This creates the customization information and adds it to the internal
* structures, initializing all values based on the settings inherited from <package> and <global> elements of
* the structure. This method should only be used after first calling {@link #getClassCustomization(String)} and
* obtaining a null result.
*
* @param type fully qualified class name
* @return class information
*/
private ClassCustom buildClassCustomization(String type) {
int split = type.lastIndexOf('.');
PackageCustom pack = split < 0 ? getPackage("") : getPackage(type.substring(0, split));
ClassCustom clas = pack.addClassCustomization(type.substring(split + 1));
return clas;
}
/**
* Get class customization information, creating it if it doesn't already exist. This internal method supplies the
* class information in uninitialized form, so that data can be unmarshalled before initialization.
*
* @param type fully qualified class name
* @return class information
*/
private ClassCustom forceClassCustomization(String type) {
ClassCustom custom = getClassCustomization(type);
if (custom == null) {
custom = buildClassCustomization(type);
}
return custom;
}
/**
* Get initialized class customization information, creating it if it doesn't already exist.
*
* @param type fully qualified class name
* @return class information
*/
public ClassCustom addClassCustomization(String type) {
ClassCustom custom = getClassCustomization(type);
if (custom == null) {
custom = buildClassCustomization(type);
((PackageCustom)custom.getParent()).fixNamespace();
custom.apply(m_classLocator);
}
return custom;
}
/**
* Check if type represents a known mapping.
*
* @param type fully qualified class name
* @return known mapping flag
*/
public boolean isKnownMapping(String type) {
// TODO: add known mappings for org.w3c.dom.*, etc.
return false;
}
/**
* Direction set text method. This is intended for use during unmarshalling. TODO: add validation
*
* @param text
* @param ictx
*/
private void setDirectionText(String text, IUnmarshallingContext ictx) {
int direct = s_directionEnum.getValue(text);
if (direct < 0) {
throw new IllegalArgumentException("Value '" + text + "' not recognized for 'direction' attribute");
} else {
m_isInput = direct != OUT_BINDING;
m_isOutput = direct != IN_BINDING;
}
}
/**
* Direction get text method. This is intended for use during marshalling.
*
* @return text
*/
private String getDirectionText() {
if (m_isInput && m_isOutput) {
return s_directionEnum.getName(BOTH_BINDING);
} else if (m_isInput) {
return s_directionEnum.getName(IN_BINDING);
} else {
return s_directionEnum.getName(OUT_BINDING);
}
}
/**
* Initialize the global default namespace, along with special classes with built-in defaults. This needs to be done
* as a separate step before unmarshalling, so that the special classes are available for use.
*/
public void initClasses() {
// set default namespace
if (getNamespace() == null) {
setNamespace(getSpecifiedNamespace());
}
// create information for some special classes
ClassCustom custom = forceClassCustomization("java.util.List");
if (custom.getCreateType() == null && custom.getFactoryMethod() == null) {
custom.setCreateType("java.util.ArrayList");
}
custom = forceClassCustomization("java.util.Set");
if (custom.getCreateType() == null && custom.getFactoryMethod() == null) {
custom.setCreateType("java.util.HashSet");
}
custom = forceClassCustomization("java.util.Collection");
if (custom.getCreateType() == null && custom.getFactoryMethod() == null) {
custom.setCreateType("java.util.ArrayList");
}
}
/**
* Fills in class information based on inspection of the actual class data. This needs to be done as a separate step
* following unmarshalling, so that the full details of the unmarshalled customizations are available.
*/
public void fillClasses() {
// fill in details for all packages
for (Iterator iter = m_packageMap.values().iterator(); iter.hasNext();) {
PackageCustom pack = (PackageCustom)iter.next();
pack.fixNamespace();
pack.apply(m_classLocator);
}
// fill in details for any extension elements
if (m_extensionChildren != null) {
for (int i = 0; i < m_extensionChildren.size(); i++) {
Object child = m_extensionChildren.get(i);
if (child instanceof IApply) {
((IApply)child).apply(m_classLocator);
}
}
}
}
//
// Package structure support
/**
* Get package customizations. If the requested package is already defined the existing instance will be returned,
* otherwise a new instance will be created (along with any ancestor packages) and added to the structure.
*
* @param name Package name
* @return package
*/
public PackageCustom getPackage(String name) {
// find existing package information
PackageCustom pack = (PackageCustom)m_packageMap.get(name);
if (pack == null) {
// create new package information
PackageCustom parent = null;
int split = name.lastIndexOf('.');
String simple = name;
String full = name;
if (split > 0) {
parent = getPackage(name.substring(0, split));
simple = name.substring(split + 1);
full = parent.getName() + '.' + simple;
} else if (name.length() > 0) {
parent = getPackage("");
}
pack = new PackageCustom(simple, full, parent);
m_packageMap.put(name, pack);
}
return pack;
}
/**
* Unmarshaller implementation for class. This handles the nested structure of packages and classes, using the
* abstract mappings defined by the binding to handle all the actual details.
*/
public static class Mapper implements IUnmarshaller
{
public boolean isPresent(IUnmarshallingContext ictx) throws JiBXException {
return true;
}
/**
* Build the fully-qualified name for a package or class by appending the supplied name attribute value to the
* fully-qualified name of the containing package.
*
* @param contain
* @param ctx
* @throws JiBXException
*/
private String buildFullName(PackageCustom contain, UnmarshallingContext ctx) throws JiBXException {
String lead = "";
if (contain != null) {
lead = contain.getName() + '.';
}
return lead + ctx.attributeText(null, "name");
}
/**
* Unmarshal package element. This calls itself recursively to handle nested package elements, and
* calls {@link #unmarshalClass(GlobalCustom, PackageCustom, UnmarshallingContext)} to handle nested
* class elements.
*
* @param global root customizations
* @param contain containing package
* @param ctx unmarshalling context
* @return unmarshalled package data
* @throws JiBXException
*/
private PackageCustom unmarshalPackage(GlobalCustom global, PackageCustom contain, UnmarshallingContext ctx)
throws JiBXException {
// create class instance and populate mapped values
PackageCustom inst = global.getPackage(buildFullName(contain, ctx));
ctx.getUnmarshaller("package").unmarshal(inst, ctx);
inst.fixNamespace();
// handle nested package and class information
while (ctx.isStart()) {
String element = ctx.getName();
if (PackageCustom.ELEMENT_NAME.equals(element)) {
unmarshalPackage(global, inst, ctx);
} else if (ClassCustom.ELEMENT_NAME.equals(element)) {
unmarshalClass(global, inst, ctx);
}
}
ctx.parsePastEndTag(null, PackageCustom.ELEMENT_NAME);
return inst;
}
/**
* Unmarshal class element. This calls itself recursively to handle nested class elements, and
* calls {@link #unmarshalClass(GlobalCustom, PackageCustom, UnmarshallingContext)} to handle nested
* class elements.
*
* @param global root customizations
* @param contain containing package
* @param ctx unmarshalling context
* @return unmarshalled class data
* @throws JiBXException
*/
private ClassCustom unmarshalClass(GlobalCustom global, PackageCustom contain, UnmarshallingContext ctx)
throws JiBXException {
// create class instance and populate mapped values
String name = buildFullName(contain, ctx);
int split = name.lastIndexOf('.');
PackageCustom pack = global.getPackage(split < 0 ? "" : name.substring(0, split));
pack.fixNamespace();
String simple = name.substring(split + 1);
ClassCustom inst = pack.getClassCustomization(simple);
if (inst == null) {
inst = pack.addClassCustomization(simple);
}
ctx.getUnmarshaller("class").unmarshal(inst, ctx);
ctx.parsePastEndTag(null, ClassCustom.ELEMENT_NAME);
// add to list unmarshalled
global.getUnmarshalledClasses().add(inst);
return inst;
}
/**
* Unmarshal root element of customizations. This expects to handle the actual root element of the binding
* directly, meaning it should always be invoked by using the
* {@link org.jibx.runtime.IUnmarshallable#unmarshal(IUnmarshallingContext)} method. The actual root element may
* be anything, allowing the unmarshaller to be used for subclasses (with different names) of the outer class.
*
* @param obj root element object (must be an instance of the GlobalCustom type)
* @param ictx unmarshalling context
* @return unmarshalled root object element
* @throws JiBXException Error
*/
public Object unmarshal(Object obj, IUnmarshallingContext ictx) throws JiBXException {
// initialize namespace and special classes
GlobalCustom global = (GlobalCustom)obj;
global.initClasses();
// unmarshal the wrapper element directly
UnmarshallingContext ctx = (UnmarshallingContext)ictx;
while (ctx.isStart()) {
// check type of child present
String element = ctx.getName();
if (PackageCustom.ELEMENT_NAME.equals(element)) {
unmarshalPackage(global, null, ctx);
} else if (ClassCustom.ELEMENT_NAME.equals(element)) {
unmarshalClass(global, null, ctx);
} else {
global.internalAddExtensionChild(ctx.unmarshalElement());
}
}
return global;
}
}
}
