svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libIverUtiles / src / org / gvsig / tools / persistence / xmlentity / XMLEntityState.java @ 28076
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package org.gvsig.tools.persistence.xmlentity; |
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import java.io.IOException; |
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import java.io.Reader; |
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import java.io.Writer; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import org.exolab.castor.xml.MarshalException; |
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import org.exolab.castor.xml.Marshaller; |
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import org.exolab.castor.xml.ValidationException; |
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import org.gvsig.tools.persistence.PersistenceException; |
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import org.gvsig.tools.persistence.PersistenceValueNotFoundException; |
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import org.gvsig.tools.persistence.Persistent; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.impl.AbstractPersistentState; |
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import com.iver.utiles.NotExistInXMLEntity; |
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import com.iver.utiles.XMLEntity; |
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import com.iver.utiles.xmlEntity.generate.XmlTag; |
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public class XMLEntityState extends AbstractPersistentState { |
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final private static int DATA_POS = 0; |
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final private static String KEY_CLASSNAME = "_classname_"; |
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final private static String KEY_DATA = "_item_data_"; |
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final private static String VALUE = "_value_"; |
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final private static String KEY_CHILD = "_childName_"; |
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final private static String ITEM = "_iterator_item_"; |
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public static String PROJECTENCODING = "UTF-8"; |
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protected XMLEntity xmlEntity;
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protected XMLEntityManager manager;
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protected XMLEntity data;
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public XMLEntityState(XMLEntityManager manager) {
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this(manager, new XMLEntity()); |
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} |
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public XMLEntityState(XMLEntityManager manager, XMLEntity xmlEntity) {
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this.manager = manager;
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this.xmlEntity = xmlEntity;
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this.data = xmlEntity.firstChild(KEY_DATA);
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} |
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protected void init() { |
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this.data = new XMLEntity(); |
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this.data.getXmlTag().setName(KEY_DATA);
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this.xmlEntity.addChild(this.data); |
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} |
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public XMLEntity getXMLEntity() {
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return this.xmlEntity; |
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} |
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public void setTheClass(Object obj) { |
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this.xmlEntity.putProperty(KEY_CLASSNAME, obj.getClass().getName());
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} |
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public void setTheClass(Class theClass) { |
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this.xmlEntity.putProperty(KEY_CLASSNAME, theClass.getName());
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} |
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public void setTheClass(String name) { |
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this.xmlEntity.putProperty(KEY_CLASSNAME, name);
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} |
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public String getTheClassName() { |
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return this.xmlEntity.getStringProperty(KEY_CLASSNAME); |
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} |
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protected XMLEntity getData() {
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if (this.data==null) { |
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init(); |
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} |
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return this.data; |
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} |
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protected void setName(String name) { |
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this.xmlEntity.getXmlTag().setName(name);
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} |
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protected String getName() { |
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return this.xmlEntity.getXmlTag().getName(); |
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} |
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public Object get(String name) throws PersistenceException { |
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XMLEntity value = this.getData().firstChild(name);
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if( value == null ) { |
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try {
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return this.getData().getStringProperty(name); |
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} catch (NotExistInXMLEntity e) {
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throw new PersistenceValueNotFoundException(name, e); |
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} |
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} |
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return manager.create(manager.createState(value));
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} |
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public PersistentState getState(String name) |
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throws PersistenceException {
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XMLEntity value = this.getData().firstChild(name);
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if (value == null) { |
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throw new PersistenceValueNotFoundException(name); |
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} |
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return manager.createState(value);
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} |
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public boolean getBoolean(String name) |
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throws PersistenceValueNotFoundException {
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try {
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return this.getData().getBooleanProperty(name); |
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} catch (NotExistInXMLEntity e) {
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throw new PersistenceValueNotFoundException(name, e); |
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} |
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} |
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public double getDouble(String name) |
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throws PersistenceValueNotFoundException {
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try {
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return this.getData().getDoubleProperty(name); |
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} catch (NotExistInXMLEntity e) {
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throw new PersistenceValueNotFoundException(name, e); |
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} |
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} |
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public float getFloat(String name) throws PersistenceValueNotFoundException { |
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try {
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return this.getData().getFloatProperty(name); |
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} catch (NotExistInXMLEntity e) {
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throw new PersistenceValueNotFoundException(name, e); |
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} |
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} |
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public int getInt(String name) throws PersistenceValueNotFoundException { |
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try {
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return this.getData().getIntProperty(name); |
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} catch (NotExistInXMLEntity e) {
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throw new PersistenceValueNotFoundException(name, e); |
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} |
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} |
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public long getLong(String name) throws PersistenceValueNotFoundException { |
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try {
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return this.getData().getLongProperty(name); |
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} catch (NotExistInXMLEntity e) {
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throw new PersistenceValueNotFoundException(name, e); |
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} |
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} |
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public String getString(String name) |
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throws PersistenceValueNotFoundException {
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return this.getData().getStringProperty(name); |
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} |
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public void set(String name, String value) { |
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this.getData().putProperty(name, value);
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} |
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public void set(String name, int value) { |
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this.getData().putProperty(name, value);
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} |
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public void set(String name, long value) { |
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this.getData().putProperty(name, value);
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} |
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public void set(String name, double value) { |
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this.getData().putProperty(name, value);
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} |
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public void set(String name, float value) { |
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this.getData().putProperty(name, value);
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} |
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public void set(String name, boolean value) { |
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this.getData().putProperty(name, value);
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} |
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public void set(String name, PersistentState state) throws PersistenceException { |
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if (state instanceof XMLEntityState) { |
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XMLEntityState lstate = (XMLEntityState) state; |
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XMLEntityState wrappingState = manager.createStateInstance(); |
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wrappingState.setTheClass(PersistentState.class); |
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wrappingState.setName(name); |
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wrappingState.getData().addChild(lstate.getXMLEntity()); |
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this.getData().addChild(wrappingState.xmlEntity);
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} |
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else {
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// TODO if the state comes from a different implementation, use
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// TODO the names iterator to get all the values and persist them
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throw new PersistenceException("", "Not yet implemented", -1); |
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// TODO use a proper exception format
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} |
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} |
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public void set(String name, Persistent obj) |
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throws PersistenceException {
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XMLEntityState state = (XMLEntityState) manager.getState(obj); |
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state.setName(name); |
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this.getData().addChild(state.xmlEntity);
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} |
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public static class PersistentIterator implements Iterator, Persistent { |
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private XMLEntityState state = null; |
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int current = 0; |
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public PersistentIterator() {
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} |
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public boolean hasNext() { |
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return (state!=null && current< state.getData().getChildrenCount()); |
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} |
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public Object next() { |
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Object value = null; |
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XMLEntity xmlEntity = (XMLEntity) state.getData().getChild(current++); |
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String className = xmlEntity.getStringProperty(KEY_CLASSNAME);
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if (className.equals(String.class.getName())) { |
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value = xmlEntity.getObjectProperty(VALUE); |
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} else if (className.equals(Integer.class.getName())) { |
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value = xmlEntity.getIntProperty(VALUE); |
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} else if (className.equals(Long.class.getName())) { |
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value = xmlEntity.getLongProperty(VALUE); |
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} else if (className.equals(Double.class.getName())) { |
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value = xmlEntity.getDoubleProperty(VALUE); |
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} else if (className.equals(Float.class.getName())) { |
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value = xmlEntity.getFloatProperty(VALUE); |
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} else if (className.equals(Boolean.class.getName())) { |
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value = xmlEntity.getBooleanProperty(VALUE); |
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} |
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else if (className.equals(PersistentState.class)) { |
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if (xmlEntity.getChildrenCount()>0) { |
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try {
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value = state.manager.create(state.manager.createState(xmlEntity)); |
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} catch (PersistenceException e) {
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// FIXME
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throw new RuntimeException(e); |
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} |
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} |
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} |
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else { // suppose it is a Persistent object |
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try {
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value = state.manager.create(state.manager.createState(xmlEntity)); |
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} catch (PersistenceException e) {
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// FIXME
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throw new RuntimeException(e); |
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} |
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} |
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return value;
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} |
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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public void setState(PersistentState state) throws PersistenceException { |
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if (state instanceof XMLEntityState) { |
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this.state = (XMLEntityState) state;
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current = 0;
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} |
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else {
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// FIXME
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throw new PersistenceException("", "Not supported yet", -1); |
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} |
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} |
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public void saveToState(PersistentState state) |
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throws PersistenceException {
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throw new UnsupportedOperationException(); |
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} |
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} |
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public Iterator getIterator(String name) |
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throws PersistenceException, PersistenceValueNotFoundException
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{
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XMLEntity value = this.getData().firstChild(name);
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if (value == null) { |
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throw new PersistenceValueNotFoundException(name); |
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} |
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return (Iterator) manager.create(manager.createState(value)); |
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} |
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public void set(String name, Iterator it) |
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throws PersistenceException {
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XMLEntityState stateList = manager.createStateInstance(); |
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stateList.setName(name); |
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stateList.setTheClass(PersistentIterator.class); |
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while (it.hasNext()) {
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Object value = it.next();
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if (value instanceof Persistent) { |
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XMLEntityState persistentState = |
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(XMLEntityState) manager.getState((Persistent)value); |
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persistentState.setName(ITEM); |
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stateList.getData().addChild(persistentState.xmlEntity); |
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} |
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else if (value instanceof XMLEntityState) { |
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XMLEntityState persistentState = |
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(XMLEntityState) value; |
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persistentState.setName(ITEM); |
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stateList.getData().addChild(persistentState.xmlEntity); |
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} |
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else if (value instanceof Integer |
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|| value instanceof Long || value instanceof Double |
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|| value instanceof Float || value instanceof String |
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|| value instanceof Boolean) { |
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XMLEntityState stateItem = (XMLEntityState) manager.createStateInstance(); |
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stateItem.setName(ITEM); |
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stateItem.xmlEntity.putProperty(KEY_CLASSNAME, value.getClass().getName()); |
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stateItem.xmlEntity.putProperty(VALUE, value); |
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stateList.getData().addChild(stateItem.xmlEntity); |
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} else {
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//TODO add a meaningful message and maybe use a more specific exception
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throw new PersistenceException(new RuntimeException()); |
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} |
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} |
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// stateList.xmlEntity.putProperty(KEY_CHILD, name);
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this.getData().addChild(stateList.xmlEntity);
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} |
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private class NamesIterator implements Iterator { |
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private String name; |
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private XMLEntity xmlEntity;
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private int index; |
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private int propertiyCount; |
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public NamesIterator(XMLEntity xmlEntity) {
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this.xmlEntity = xmlEntity;
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this.name = null; |
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this.index = 0; |
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this.propertiyCount = xmlEntity.getPropertyCount();
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} |
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private void testNext() { |
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if (this.name != null) { |
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return;
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} |
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String tmpName;
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while (this.index < this.propertiyCount) { |
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tmpName = this.xmlEntity.getPropertyName(index);
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index++; |
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if (!tmpName.equals(KEY_CHILD) || tmpName.equals(KEY_CLASSNAME)) {
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continue;
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} else {
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this.name = tmpName;
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break;
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} |
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} |
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} |
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public boolean hasNext() { |
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this.testNext();
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return this.index < this.propertiyCount; |
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} |
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public Object next() { |
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this.testNext();
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if (this.name == null) { |
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throw new NoSuchElementException(); |
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} |
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String tmpName = this.name; |
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this.name = null; |
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return tmpName;
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} |
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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} |
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public Iterator getNames() { |
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return new NamesIterator(this.xmlEntity); |
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} |
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public void set(String name, Object value) |
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throws PersistenceException {
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if (value instanceof Persistent) { |
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set(name, (Persistent)value); |
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} else if (value instanceof Integer || value instanceof Long |
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|| value instanceof Double || value instanceof Float |
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|| value instanceof String || value instanceof Boolean) { |
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this.getData().putProperty(name, value);
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} else if (value instanceof Iterator) { |
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set(name, (Iterator)value);
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} |
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else {
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throw new IllegalArgumentException(name); |
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} |
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} |
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public void load(Reader reader) throws PersistenceException { |
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try {
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Object obj = XmlTag.unmarshal(reader);
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xmlEntity = new XMLEntity((XmlTag)obj);
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data = xmlEntity.firstChild(KEY_DATA); |
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} catch (MarshalException e) { |
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throw new PersistenceException(e); |
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} catch (ValidationException e) {
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throw new PersistenceException(e); |
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} |
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} |
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public void save(Writer writer) throws PersistenceException { |
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try {
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Marshaller m = new Marshaller(writer);
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m.setEncoding(PROJECTENCODING); |
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m.marshal(xmlEntity.getXmlTag()); |
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} catch (IOException e) { |
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throw new PersistenceException(e); |
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} catch (MarshalException e) { |
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throw new PersistenceException(e); |
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} catch (ValidationException e) {
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throw new PersistenceException(e); |
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} |
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} |
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} |