Rule.java

/*
 * Copyright 2016 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.
 * 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.workbench.services.verifier.api.client.index;

import org.drools.workbench.services.verifier.api.client.configuration.AnalyzerConfiguration;
import org.drools.workbench.services.verifier.api.client.index.keys.IndexKey;
import org.drools.workbench.services.verifier.api.client.index.keys.Key;
import org.drools.workbench.services.verifier.api.client.index.keys.UUIDKey;
import org.drools.workbench.services.verifier.api.client.index.keys.UpdatableKey;
import org.drools.workbench.services.verifier.api.client.index.matchers.ComparableMatchers;
import org.drools.workbench.services.verifier.api.client.index.matchers.UUIDMatchers;
import org.drools.workbench.services.verifier.api.client.maps.KeyDefinition;
import org.drools.workbench.services.verifier.api.client.maps.util.HasIndex;
import org.drools.workbench.services.verifier.api.client.maps.util.HasKeys;

public class Rule
        implements Comparable<Rule>,
                   HasKeys,
                   HasIndex {

    private final Patterns patterns = new Patterns();
    private final Actions actions = new Actions();
    private final Conditions conditions = new Conditions();

    private final UUIDKey uuidKey;

    private UpdatableKey<Rule> indexKey;


    public Rule( final Integer rowNumber,
                 final AnalyzerConfiguration configuration ) {
        this.indexKey = new UpdatableKey<>( IndexKey.INDEX_ID,
                                            rowNumber );
        this.uuidKey = configuration.getUUID( this );
    }

    public static Matchers uuid() {
        return new UUIDMatchers();
    }

    public static ComparableMatchers index() {
        return new ComparableMatchers( IndexKey.INDEX_ID );
    }

    public static KeyDefinition[] keyDefinitions() {
        return new KeyDefinition[]{
                UUIDKey.UNIQUE_UUID,
                IndexKey.INDEX_ID
        };
    }

    public Integer getRowNumber() {
        return getIndex();
    }

    public Patterns getPatterns() {
        return patterns;
    }

    public Conditions getConditions() {
        return conditions;
    }

    public Actions getActions() {
        return actions;
    }

    @Override
    public int compareTo( final Rule rule ) {
        return 0;
    }

    public Key[] keys() {
        return new Key[]{
                uuidKey,
                indexKey
        };
    }

    @Override
    public UUIDKey getUuidKey() {
        return uuidKey;
    }

    @Override
    public int getIndex() {
        return (int) indexKey.getSingleValueComparator();
    }

    @Override
    public void setIndex( final int index ) {
        if ( indexKey.getSingleValue()
                .equals( index ) ) {
            return;
        } else {

            final UpdatableKey<Rule> oldKey = indexKey;

            final UpdatableKey<Rule> newKey = new UpdatableKey<>( IndexKey.INDEX_ID,
                                                                  index );
            indexKey = newKey;

            oldKey.update( newKey,
                           this );
        }
    }

    @Override
    public boolean equals( final Object o ) {
        if ( this == o ) {
            return true;
        }
        if ( o == null || getClass() != o.getClass() ) {
            return false;
        }

        final Rule rule = (Rule) o;

        if ( !uuidKey.equals( rule.uuidKey ) ) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        return uuidKey.hashCode();
    }
}