/*******************************************************************************
 * Copyright (c) 2004-2008 Akos Horvath, Gergely Varro and Daniel Varro
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Akos Horvath, Gergely Varro - initial API and implementation
 *******************************************************************************/

 package org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.algorithms;

import org.eclipse.viatra2.core.IModelManager;
import org.eclipse.viatra2.gtasm.patternmatcher.PatternCallSignature;
import org.eclipse.viatra2.gtasm.patternmatcher.exceptions.PatternMatcherCompileTimeException;
import org.eclipse.viatra2.gtasm.patternmatcher.exceptions.PatternMatcherRuntimeException;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.exceptions.GTRuleBuildingException;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.internal.GTElementMapping;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.internal.GTOperationContext;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.callgraph.BodyNode;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.callgraph.FlattenedPattern;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.callgraph.PatternReferenceNode;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.operation.SearchPlanOperation;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.AbstractNode;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.SearchGraphEdge;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.SearchGraphNode;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.traceability.EdgeTraceabilityElement;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.traceability.NodeTraceabilityElement;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.core.AnnotatedElement;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.core.GTASMElement;

import java.util.Collection;
import java.util.TreeMap;


/**Interface for the search graph used in the optimization algorithm
 * @author Akos Horvath
 *
 */
public interface ISearchGraph {
	
	  
    public static final String VPM_RELATION_FQN = "vpm.relation";
    public static final String VPM_ENTITY_FQN = "vpm.entity";
	public static final int VARIABLEASSIGNMENT_WEIGHT = 5;
   
	
    //These are the methods that are used by the optimization algorithms
	public TreeMap<Integer, SearchGraphNode> getSearchNodes();
	/** Returns the search operation generated from the search graph parametrized with the input parameters adornment
	 * @param pattern The flattened pattern to generate from
	 * @param adornment Adornment of the input parameter
	 * @param manager 
	 * @return Vector of the Operation plan
	 * @throws PatternMatcherRuntimeException 
	 */
	public Collection<SearchPlanOperation> generateSearchPlan(FlattenedPattern pattern, Boolean[] adornment, IModelManager manager) throws PatternMatcherRuntimeException;
	/**
	 * Initializes the search graph
	 */
	public void initSearchGraph();
	public void add(BodyNode node, FlattenedPattern result) throws PatternMatcherCompileTimeException;
	/** Adds a pattern invocation node to the search graph
 	 * @param prNode The new pattern invocation node
	 * @param result The flattened pattern of the search graph
	 * @throws PatternMatcherCompileTimeException
	 */
	public void add(PatternReferenceNode prNode, FlattenedPattern result) throws PatternMatcherCompileTimeException;
	/** Returns the generated GTOperations and variable mapping
	 * @param gtElementMappings The RHS-LHS parameter mapping
	 * @param manager Model manager of the actual framework
	 * @param signature The input parameters' signatures 
	 * @return
	 * @throws GTRuleBuildingException
	 */
	public GTOperationContext generateGTOperations(Collection<GTElementMapping> gtElementMappings, IModelManager manager, PatternCallSignature[] signature) throws GTRuleBuildingException;
	 /** Returns the search graph element with the input id
	 * @param key The id of the search graph element
	 * @return
	 */
	public SearchGraphNode getSearchNode(Integer key);
	/** Evaluates the dangling relations and relationships and adds them to the flattened pattern's search graph
	 * @param pattern Flattened Pattern of the search graph
	 * @throws PatternMatcherCompileTimeException
	 */
	 public void connectDanglingRelations(FlattenedPattern pattern) throws PatternMatcherCompileTimeException;
	/**Return the EMF equivalent of the input SearchGraph element
	 * @param node The node whose EMF representation is returned
	 * @return
	 */
	public AnnotatedElement getGTASMRepresentation(AbstractNode node); 
	
	/**To add an edge based traceability element to the search graph
	 * @param edge The edge whose element is added
	 * @param element The traceability element
	 */
	public void addTraceabilityElement(SearchGraphEdge edge, EdgeTraceabilityElement element);	
	
	/**To add a node based traceability element to the search graph
	 * @param edge The edge whose element is added
	 * @param element The traceability element
	 */
	public void addTraceabilityElement(SearchGraphNode node, NodeTraceabilityElement element);
		
}