SyntaxGraph.java

package org.maltparser.core.syntaxgraph;

import java.util.Observer;
import org.maltparser.core.exception.MaltChainedException;
import org.maltparser.core.pool.ObjectPoolList;
import org.maltparser.core.symbol.SymbolTableHandler;

/**
 *
 *
 * @author Johan Hall
 */
public abstract class SyntaxGraph implements LabeledStructure, Structure, Observer {

    protected SymbolTableHandler symbolTables;
    protected final ObjectPoolList<LabelSet> labelSetPool;
    protected int numberOfComponents;

    public SyntaxGraph(SymbolTableHandler symbolTables) throws MaltChainedException {
        this.symbolTables = symbolTables;
        labelSetPool = new ObjectPoolList<LabelSet>() {

            protected LabelSet create() {
                return new LabelSet(6);
            }

            public void resetObject(LabelSet o) throws MaltChainedException {
                o.clear();
            }
        };
    }

    public SymbolTableHandler getSymbolTables() {
        return symbolTables;
    }

    public void setSymbolTables(SymbolTableHandler symbolTables) {
        this.symbolTables = symbolTables;
    }

    public void addLabel(Element element, String labelFunction, String label) throws MaltChainedException {
        element.addLabel(symbolTables.addSymbolTable(labelFunction), label);
    }

    public LabelSet checkOutNewLabelSet() throws MaltChainedException {
        return labelSetPool.checkOut();
    }

    public void checkInLabelSet(LabelSet labelSet) throws MaltChainedException {
        labelSetPool.checkIn(labelSet);
    }

    public void clear() throws MaltChainedException {
        numberOfComponents = 0;
        labelSetPool.checkInAll();
    }
}