gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / dynobject / impl / DefaultDynObject.java @ 1405
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.tools.dynobject.impl; |
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import java.util.HashMap; |
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import java.util.Map; |
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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.DynField_v2; |
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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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public class DefaultDynObject implements DelegatedDynObject { |
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protected DynClass dynClass;
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protected Map values; |
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protected DynObject[] delegateds; |
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public DefaultDynObject(DynStruct dynClass) {
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this.dynClass = (DynClass) dynClass;
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this.delegateds = null; |
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this.values = createValues(null); |
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} |
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private Map createValues(Map oldValues) { |
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HashMap extended = new HashMap(); |
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if ( oldValues != null ) { |
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extended.putAll(oldValues); |
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} |
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return extended;
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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 = 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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name = name.toLowerCase(); |
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DynField field = dynClass.getDynField(name); |
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if( field != null ) { |
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if( field instanceof DynField_v2 && ((DynField_v2)field).isCalculated() ) { |
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return ((DynField_v2)field).getCalculatedValue(this); |
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} |
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if( values.containsKey(name) ) {
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return values.get(name);
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} |
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defined = true;
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defaultValue = field.getDefaultValue(); |
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} |
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//
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// FieldAndIndex fieldAndIndex = dynClass.getDynFieldAndIndex(name);
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// if ( fieldAndIndex != null ) {
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// if ( values.containsKey(name) ) {
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// return values.get(name);
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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) |
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throws DynFieldNotFoundException {
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name = name.toLowerCase(); |
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if ( this.dynClass.getDynField(name) == null ) { |
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throw new DynFieldNotFoundException(name, this.getDynClass() |
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.getName()); |
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} |
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try {
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values.put(name, this.dynClass.getDynField(name).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, |
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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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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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name = name.toLowerCase(); |
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DynField field = dynClass.getDynField(name); |
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if( field!=null ) { |
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if ( this.values.containsKey(name) ) { |
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return true; |
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} |
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defined = true;
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} |
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// int index = dynClass.getFieldIndex(name); xxxx
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// if ( index >= 0 ) {
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// if ( this.values.containsKey(name) ) {
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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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@Override
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public Object invokeDynMethod(String name, Object[] args) |
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throws DynMethodException {
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return this.invokeDynMethod(this, name, args); |
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} |
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@Override
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public Object invokeDynMethod(int code, Object[] args) throws DynMethodException { |
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return this.invokeDynMethod(this, code, args); |
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} |
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@Override
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public Object invokeDynMethod(Object self, String methodName, Object[] args) throws DynMethodException { |
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DynMethod method = this.dynClass.getDynMethod(methodName);
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if (method != null) { |
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return method.invoke((DynObject)self, args);
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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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try {
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return delegateds[i].invokeDynMethod(methodName,args);
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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.getClass().getName()); |
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} |
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@Override
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public Object invokeDynMethod(Object self, int methodCode, Object[] args) throws DynMethodException { |
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DynMethod method = this.dynClass.getDynMethod(methodCode);
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if (method != null) { |
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return method.invoke((DynObject)self, args);
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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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try {
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return delegateds[i].invokeDynMethod(methodCode,args);
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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(methodCode, self.getClass().getName()); |
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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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return DefaultDynObject.toString(this); |
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} |
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public static String toString(DynObject obj) { |
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StringBuffer buffer = new StringBuffer(); |
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DynClass dynClass = obj.getDynClass(); |
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buffer.append("DynClass name: ").append(dynClass.getName()).append(
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"; Fields: ");
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DynField[] fields = dynClass.getDynFields();
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if ( fields == null || fields.length == 0 ) { |
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buffer.append("(none)");
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} else {
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buffer.append("[");
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for ( int i = 0; i < fields.length; i++ ) { |
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if ( i != 0 ) { |
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buffer.append(", ");
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} |
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buffer.append(fields[i].getName()).append(" = ")
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.append(obj.getDynValue(fields[i].getName())); |
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} |
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buffer.append("]");
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} |
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return buffer.toString();
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} |
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public boolean hasEmptyValues() { |
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return this.values.isEmpty(); |
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} |
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} |