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/**

Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016.  All rights reserved.

Contact:
     SYSTAP, LLC DBA Blazegraph
     2501 Calvert ST NW #106
     Washington, DC 20008
     [email protected]

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*
 * Created on Mar 10, 2012
 */

package com.bigdata.rdf.sparql.ast;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import com.bigdata.bop.BOp;
import com.bigdata.bop.IVariable;

/**
 * Any of the operations which has a FROM and/or TO graph.
 * 
 * @author Bryan Thompson
 * @version $Id$
 */
abstract public class AbstractFromToGraphManagement extends GraphManagement {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public AbstractFromToGraphManagement(final UpdateType updateType) {
        
        super(updateType);
        
    }

    /**
     * @param op
     */
    public AbstractFromToGraphManagement(final AbstractFromToGraphManagement op) {
        
        super(op);
        
    }

    /**
     * @param args
     * @param anns
     */
    public AbstractFromToGraphManagement(final BOp[] args,
            final Map anns) {

        super(args, anns);

    }

    /**
     * {@inheritDoc}
     * 
     * @return The source graph -or- null if the source is the
     *         "default" graph.
     */
    @Override
    public ConstantNode getSourceGraph() {
        
        return (ConstantNode) getProperty(Annotations.SOURCE);
        
    }

    @Override
    public void setSourceGraph(final ConstantNode sourceGraph) {

        if (sourceGraph == null)
            throw new IllegalArgumentException();
        
        setProperty(Annotations.SOURCE, sourceGraph);
        
    }

    /**
     * {@inheritDoc}
     * 
     * @return The target graph -or- null if the target is the
     *         "default" graph.
     */
    @Override
    final public ConstantNode getTargetGraph() {
        
        return (ConstantNode) getProperty(Annotations.TARGET);
        
    }

    @Override
    final public void setTargetGraph(final ConstantNode targetGraph) {

        if (targetGraph == null)
            throw new IllegalArgumentException();
        
        setProperty(Annotations.TARGET, targetGraph);
        
    }

    /**
     * Return true iff the target is the "default graph".
     */
    final public boolean isTargetDefault() {
        
        return getTargetGraph() == null;
        
    }
    
    /**
     * Return true iff the source is the "default graph".
     */
    final public boolean isSourceDefault() {
        
        return getSourceGraph() == null;
        
    }
    
    //COPY ( SILENT )? ( ( GRAPH )? IRIref_from | DEFAULT) TO ( ( GRAPH )? IRIref_to | DEFAULT )
    //ADD ( SILENT )? ( ( GRAPH )? IRIref_from | DEFAULT) TO ( ( GRAPH )? IRIref_to | DEFAULT)
    //MOVE (SILENT)? ( ( GRAPH )? IRIref_from | DEFAULT) TO ( ( GRAPH )? IRIref_to | DEFAULT)
    final public String toString(final int indent) {

        final StringBuilder sb = new StringBuilder();

        sb.append(indent(indent));
        
        sb.append(getUpdateType());

        if (isSilent())
            sb.append(" SILENT");

        {
            final ConstantNode sourceGraph = getSourceGraph();

            sb.append("\n");
            sb.append(indent(indent + 1));
            sb.append(" source=" + sourceGraph == null ? "default"
                    : sourceGraph);
        }

        {
            final ConstantNode targetGraph = getTargetGraph();

            sb.append("\n");
            sb.append(indent(indent + 1));
            sb.append("target=" + targetGraph == null ? "default" : targetGraph);
        }

        sb.append("\n");

        return sb.toString();

    }
    
    @Override
    public Set> getRequiredBound(StaticAnalysis sa) {
       return new HashSet>();
    }

    @Override
    public Set> getDesiredBound(StaticAnalysis sa) {
       return new HashSet>();
    }

}