gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / dynobject / impl / DefaultDynObject.java @ 146
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package org.gvsig.tools.dynobject.impl; |
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import org.gvsig.tools.dataTypes.CoercionException; |
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import org.gvsig.tools.dynobject.DelegatedDynObject; |
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import org.gvsig.tools.dynobject.DynClass; |
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import org.gvsig.tools.dynobject.DynField; |
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import org.gvsig.tools.dynobject.DynMethod; |
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import org.gvsig.tools.dynobject.DynObject; |
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import org.gvsig.tools.dynobject.DynObjectRuntimeException; |
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import org.gvsig.tools.dynobject.DynStruct; |
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import org.gvsig.tools.dynobject.exception.DynFieldNotFoundException; |
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import org.gvsig.tools.dynobject.exception.DynMethodException; |
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import org.gvsig.tools.dynobject.exception.DynMethodNotSupportedException; |
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import org.gvsig.tools.dynobject.impl.DefaultDynClass.FieldAndIndex; |
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public class DefaultDynObject implements DelegatedDynObject { |
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protected DefaultDynClass dynClass;
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protected Object[] values; |
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protected DynObject[] delegateds; |
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public DefaultDynObject(DynStruct dynClass) {
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this.dynClass = (DefaultDynClass) dynClass;
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// this.values = null;
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this.delegateds = null; |
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this.values = this.dynClass.createValues(null); |
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} |
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public void implement(DynClass dynClass) { |
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this.dynClass = (DefaultDynClass) ((DefaultDynObjectManager) ((DefaultDynClass) dynClass)
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.getManager()).get(new DynClass[] { this.dynClass, dynClass }); |
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this.values = this.dynClass.createValues(this.values); |
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} |
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public Object getDynValue(String name) throws DynFieldNotFoundException { |
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boolean defined = false; |
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Object defaultValue = null; |
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FieldAndIndex fieldAndIndex = dynClass.getDynFieldAndIndex(name); |
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if (fieldAndIndex != null ) { |
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Object value = this.values[fieldAndIndex.getIndex()]; |
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if( value != null) { |
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return value;
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} |
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defined = true;
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defaultValue = fieldAndIndex.getDynField().getDefaultValue(); |
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} |
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if (delegateds != null) { |
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for (int i = 0; i < delegateds.length; i++) { |
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DynObject dynObj = delegateds[i]; |
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try {
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if (dynObj.hasDynValue(name)) {
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return dynObj.getDynValue(name);
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} else {
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defined = true;
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defaultValue = dynObj.getDynValue(name); |
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} |
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} catch(DynFieldNotFoundException ex) {
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; |
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} |
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} |
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} |
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if( defined ) {
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return defaultValue;
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} |
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throw new DynFieldNotFoundException(name, dynClass.getName()); |
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} |
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public void setDynValue(String name, Object value) throws DynFieldNotFoundException { |
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// if( this.values == null ) {
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// this.values = this.dynClass.createValues(null);
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// }
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FieldAndIndex x = dynClass.getDynFieldAndIndex(name); |
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if (x == null) { |
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throw new DynFieldNotFoundException(name,this.getDynClass().getName()); |
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} |
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try {
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values[x.getIndex()] = x.getDynField().coerce(value); |
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} catch (CoercionException e) {
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throw new CoerceValueException(this.dynClass, name, value, e); |
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} |
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} |
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public class CoerceValueException extends DynObjectRuntimeException { |
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/**
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*
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*/
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private static final long serialVersionUID = 8974502669097158348L; |
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public CoerceValueException(DynStruct dynStruct, String fieldName, Object value, Throwable cause) { |
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super(
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"Can't convert value %(value) for field %(field) of class %(class).",
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cause, |
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"Cant_convert_value_XvalueX_for_field_XfieldX_of_class_XclassX",
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serialVersionUID |
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); |
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setValue("field",fieldName);
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setValue("class",dynStruct.getFullName());
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try {
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setValue("value",value.toString());
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} catch(Exception e1) { |
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setValue("value","???"); |
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} |
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} |
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} |
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public boolean instanceOf(DynClass dynClass) { |
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return dynClass.isInstance(this); |
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} |
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public DynClass getDynClass() {
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return this.dynClass; |
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} |
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public boolean hasDynValue(String name)throws DynFieldNotFoundException { |
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boolean defined = false; |
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int index = dynClass.getFieldIndex(name);
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if (index >= 0 ) { |
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if( this.values[index] != null) { |
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return true; |
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} |
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defined = true;
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} |
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if (delegateds != null) { |
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for (int i = 0; i < delegateds.length; i++) { |
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DynObject dynObj = delegateds[i]; |
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try {
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if (dynObj.hasDynValue(name)) {
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return true; |
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} else {
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defined = true;
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} |
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} catch(DynFieldNotFoundException ex) {
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; |
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} |
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} |
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} |
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if( defined ) {
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return false; |
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} |
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throw new DynFieldNotFoundException(name, dynClass.getName()); |
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} |
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public void delegate(DynObject dynObjects) { |
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if( delegateds == null ) { |
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this.delegateds = new DynObject[1]; |
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this.delegateds[0] = dynObjects; |
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return ;
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} |
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DynObject[] newValues = new DynObject[this.delegateds.length + 1]; |
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System.arraycopy(delegateds, 0, newValues, 0, delegateds.length); |
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newValues[delegateds.length] = dynObjects; |
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this.delegateds = newValues;
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} |
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public Object invokeDynMethod(String name, DynObject context) throws DynMethodException { |
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throw new IllegalArgumentException("self required"); |
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} |
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public Object invokeDynMethod(int code, DynObject context) throws DynMethodException { |
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throw new IllegalArgumentException("self required"); |
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} |
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public Object invokeDynMethod(Object self, String methodName, |
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DynObject context)throws DynMethodException {
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DynMethod method = this.dynClass.getDynMethod(methodName);
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if (method == null) { |
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if (delegateds != null) { |
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for (int i = 0; i < delegateds.length; i++) { |
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try {
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return delegateds[i].invokeDynMethod(methodName,
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context); |
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} catch (DynMethodNotSupportedException e) {
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// continue next delegated
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} |
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} |
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} |
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throw new DynMethodNotSupportedException(methodName, self |
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.getClass().getName()); |
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} |
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return method.invoke(self, context);
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} |
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public Object invokeDynMethod(Object self, int methodCode, DynObject context) throws DynMethodException { |
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DynMethod method = this.dynClass.getDynMethod(methodCode);
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if (method == null) { |
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if (delegateds != null) { |
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for (int i = 0; i < delegateds.length; i++) { |
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try {
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return delegateds[i].invokeDynMethod(methodCode,
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context); |
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} catch (DynMethodNotSupportedException e) {
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// continue next delegated
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} |
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} |
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throw new DynMethodNotSupportedException(methodCode, self |
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.getClass().getName()); |
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} else {
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throw new DynMethodNotSupportedException(methodCode, self |
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.getClass().getName()); |
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} |
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} |
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return this.dynClass.manager.invokeDynMethod(self, methodCode, context); |
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} |
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public void clear() { |
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DynField[] fields = getDynClass().getDeclaredDynFields();
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for (int i = 0; i < fields.length; i++) { |
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this.setDynValue(fields[i].getName(), fields[i].getDefaultValue());
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} |
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} |
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public String toString() { |
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StringBuffer buffer = new StringBuffer(); |
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DynClass dynClass = getDynClass(); |
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buffer.append("DynClass name: ").append(dynClass.getName()).append(
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"\nFields:");
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DynField[] fields = dynClass.getDeclaredDynFields();
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for (int i = 0; i < fields.length; i++) { |
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buffer.append("\n\t").append(fields[i].getName()).append(" = ") |
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.append(getDynValue(fields[i].getName())); |
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} |
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return buffer.toString();
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} |
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} |