org.drools.core.rule.NamedConsequence Maven / Gradle / Ivy
/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.core.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;
public class NamedConsequence extends ConditionalElement implements NamedConsequenceInvoker, Externalizable {
private String name;
private boolean breaking;
private boolean terminal;
public NamedConsequence() {
}
public NamedConsequence( String name, boolean breaking ) {
this.name = name;
this.breaking = breaking;
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
name = (String)in.readObject();
breaking = in.readBoolean();
terminal = in.readBoolean();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject( name );
out.writeBoolean( breaking );
out.writeBoolean( terminal );
}
/**
* There is not reason to clone this object since it is stateless.
* So a clone() call will return the instance itself.
*
* @see org.drools.core.rule.ConditionalElement#clone()
*/
@Override
public NamedConsequence clone() {
return this;
}
/**
* It is not possible to declare any new variables, so always
* return an Empty Map
*
* @see org.drools.core.rule.RuleConditionElement#getInnerDeclarations()
*/
public Map getInnerDeclarations() {
return Collections.emptyMap();
}
/**
* It is not possible to nest elements inside an entry point, so
* always return an empty list.
*
* @see org.drools.core.rule.RuleConditionElement#getNestedElements()
*/
public List getNestedElements() {
return Collections.emptyList();
}
/**
* It is not possible to declare and export any variables,
* so always return an empty map
*
* @see org.drools.core.rule.RuleConditionElement#getOuterDeclarations()
*/
public Map getOuterDeclarations() {
return Collections.emptyMap();
}
/**
* Not possible to resolve any declaration, so always return null.
*
* @see org.drools.core.rule.RuleConditionElement#resolveDeclaration(java.lang.String)
*/
public Declaration resolveDeclaration(String identifier) {
return null;
}
public String getConsequenceName() {
return this.name;
}
public boolean invokesConsequence(String consequenceName) {
return name.equals(consequenceName);
}
public boolean isBreaking() {
return breaking;
}
public boolean isTerminal() {
return terminal;
}
public void setTerminal(boolean terminal) {
this.terminal = terminal;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return ( breaking ? 1 : 0 ) + ( name == null ? 0 : name.hashCode() );
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if ( this == obj ) return true;
if ( obj == null ) return false;
if ( getClass() != obj.getClass() ) return false;
final NamedConsequence other = (NamedConsequence) obj;
if ( name == null ) {
if ( other.name != null ) return false;
} else if ( !name.equals( other.name ) ) return false;
return breaking == other.breaking;
}
@Override
public String toString() {
return (isBreaking() ? " break" : "do") + "[" + name + "]";
}
public boolean isPatternScopeDelimiter() {
return false;
}
}