/**
* 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.util.List;
import java.util.Map;
import org.drools.spi.RuleComponent;
/**
* @author etirelli
*
*/
public interface RuleConditionElement
extends
RuleComponent,
Externalizable,
Cloneable {
/**
* Returns a Map of declarations that are
* visible inside this conditional element
*
* @return
*/
public Map<String,Declaration> getInnerDeclarations();
/**
* Returns a Map of declarations that are visible
* outside this conditional element.
*
* @return
*/
public Map<String,Declaration> getOuterDeclarations();
/**
* Resolves the given identifier in the current scope and
* returns the Declaration object for the declaration.
* Returns null if identifier can not be resolved.
*
* @param identifier
* @return
*/
public Declaration resolveDeclaration(String identifier);
/**
* Returns a clone from itself
* @return
*/
public Object clone();
/**
* Returs a list of RuleConditionElement's that are nested
* inside the current element
* @return
*/
public List<RuleConditionElement> getNestedElements();
/**
* Returns true in case this RuleConditionElement delimits
* a pattern visibility scope.
*
* For instance, AND CE is not a scope delimiter, while
* NOT CE is a scope delimiter
* @return
*/
public boolean isPatternScopeDelimiter();
}