/**
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.rule;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.drools.spi.DataProvider;
import org.drools.spi.Wireable;
public class From extends ConditionalElement
implements
Externalizable,
Wireable,
PatternSource {
private static final long serialVersionUID = 510l;
private DataProvider dataProvider;
public From() {
}
public From(final DataProvider dataProvider) {
this.dataProvider = dataProvider;
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
dataProvider = (DataProvider)in.readObject();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(dataProvider);
}
public void wire(Object object) {
this.dataProvider = ( DataProvider ) object;
}
public DataProvider getDataProvider() {
return this.dataProvider;
}
public Object clone() {
return new From( this.dataProvider.clone() );
}
public Map getInnerDeclarations() {
return Collections.EMPTY_MAP;
}
public Map getOuterDeclarations() {
return Collections.EMPTY_MAP;
}
/**
* @inheritDoc
*/
public Declaration resolveDeclaration(final String identifier) {
return null;
}
public List getNestedElements() {
return Collections.EMPTY_LIST;
}
public boolean isPatternScopeDelimiter() {
return true;
}
}