/*
 * Copyright (c) 2011-2015 EPFL DATA Laboratory
 * Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
 *
 * All rights reserved.
 *
 * 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 ch.epfl.data.squall.ewh.components;

import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;

import backtype.storm.Config;
import backtype.storm.topology.TopologyBuilder;
import ch.epfl.data.squall.components.Component;
import ch.epfl.data.squall.components.DataSourceComponent;
import ch.epfl.data.squall.components.EquiJoinComponent;
import ch.epfl.data.squall.ewh.storm_components.OkcanSampleMatrixBolt;
import ch.epfl.data.squall.expressions.ValueExpression;
import ch.epfl.data.squall.operators.ChainOperator;
import ch.epfl.data.squall.operators.Operator;
import ch.epfl.data.squall.operators.ProjectOperator;
import ch.epfl.data.squall.predicates.ComparisonPredicate;
import ch.epfl.data.squall.predicates.Predicate;
import ch.epfl.data.squall.storage.AggregationStore;
import ch.epfl.data.squall.storm_components.synchronization.TopologyKiller;
import ch.epfl.data.squall.types.NumericType;
import ch.epfl.data.squall.types.Type;

public class OkcanSampleMatrixComponent implements Component {
    private static final long serialVersionUID = 1L;
    private static Logger LOG = Logger.getLogger(EquiJoinComponent.class);

    private final Component _firstParent;
    private final Component _secondParent;
    private String _componentName;

    private int _numOfLastJoiners;
    private ComparisonPredicate _comparison;
    private NumericType _wrapper;
    private int _firstNumOfBuckets, _secondNumOfBuckets;

    public OkcanSampleMatrixComponent(Component firstParent,
	    Component secondParent, NumericType keyType,
	    ComparisonPredicate comparison, int numOfLastJoiners,
	    int firstNumOfBuckets, int secondNumOfBuckets) {
	_firstParent = firstParent;
	_firstParent.setChild(this);
	_secondParent = secondParent;
	_secondParent.setChild(this);
	_componentName = "OKCAN_SAMPLE_MATRIX";

	_numOfLastJoiners = numOfLastJoiners;
	_comparison = comparison;
	_wrapper = keyType;
	_firstNumOfBuckets = firstNumOfBuckets;
	_secondNumOfBuckets = secondNumOfBuckets;
    }

    @Override
    public boolean equals(Object obj) {
	if (obj instanceof Component)
	    return _componentName.equals(((Component) obj).getName());
	else
	    return false;
    }

    @Override
    public List<DataSourceComponent> getAncestorDataSources() {
	final List<DataSourceComponent> list = new ArrayList<DataSourceComponent>();
	for (final Component parent : getParents())
	    list.addAll(parent.getAncestorDataSources());
	return list;
    }

    @Override
    public Component getChild() {
	return null;
    }

    @Override
    public String getName() {
	return _componentName;
    }

    @Override
    public Component[] getParents() {
	return new Component[] { _firstParent, _secondParent };
    }

    @Override
    public int hashCode() {
	int hash = 7;
	hash = 37 * hash
		+ (_componentName != null ? _componentName.hashCode() : 0);
	return hash;
    }

    @Override
    public void makeBolts(TopologyBuilder builder, TopologyKiller killer,
	    List<String> allCompNames, Config conf, int hierarchyPosition) {

	new OkcanSampleMatrixBolt(_firstParent, _secondParent, _componentName,
		_numOfLastJoiners, _wrapper, _comparison, _firstNumOfBuckets,
		_secondNumOfBuckets, allCompNames, builder, killer, conf);
    }

    // below is not used
    @Override
    public OkcanSampleMatrixComponent add(Operator operator) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public long getBatchOutputMillis() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public ChainOperator getChainOperator() {
	throw new RuntimeException("Should not be here!");
    }

    // from StormEmitter interface
    @Override
    public String[] getEmitterIDs() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public List<String> getFullHashList() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public List<ValueExpression> getHashExpressions() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public List<Integer> getHashIndexes() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public String getInfoID() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public boolean getPrintOut() {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public OkcanSampleMatrixComponent setBatchOutputMillis(long millis) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public void setChild(Component child) {
	throw new RuntimeException("Should not be here!");
    }

    // list of distinct keys, used for direct stream grouping and load-balancing
    // ()
    @Override
    public OkcanSampleMatrixComponent setFullHashList(List<String> fullHashList) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public OkcanSampleMatrixComponent setHashExpressions(
	    List<ValueExpression> hashExpressions) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public OkcanSampleMatrixComponent setOutputPartKey(List<Integer> hashIndexes) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public OkcanSampleMatrixComponent setOutputPartKey(int... hashIndexes) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public OkcanSampleMatrixComponent setPrintOut(boolean printOut) {
	throw new RuntimeException("Should not be here!");
    }

    // Out of the second storage (join of R tuple with S relation)
    public OkcanSampleMatrixComponent setSecondPreAggProj(
	    ProjectOperator secondPreAggProj) {
	throw new RuntimeException("Should not be here!");
    }

    public OkcanSampleMatrixComponent setSecondPreAggStorage(
	    AggregationStore secondPreAggStorage) {
	throw new RuntimeException("Should not be here!");
    }

    @Override
    public Component setContentSensitiveThetaJoinWrapper(Type wrapper) {
	throw new RuntimeException("Should not be here!");
    }
}