info.archinnov.achilles.query.SliceQuery.java Source code

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Here is the source code for info.archinnov.achilles.query.SliceQuery.java

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/**
 *
 * Copyright (C) 2012-2013 DuyHai DOAN
 *
 * 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 info.archinnov.achilles.query;

import info.archinnov.achilles.entity.metadata.EntityMeta;
import info.archinnov.achilles.entity.metadata.PropertyMeta;
import info.archinnov.achilles.type.BoundingMode;
import info.archinnov.achilles.type.ConsistencyLevel;
import info.archinnov.achilles.type.OrderingMode;
import info.archinnov.achilles.validation.Validator;

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

import org.apache.commons.collections.CollectionUtils;

public class SliceQuery<T> {
    public static final int DEFAULT_LIMIT = 100;
    public static final int DEFAULT_BATCH_SIZE = 100;

    private Class<T> entityClass;
    private EntityMeta meta;
    private List<Object> partitionComponents;
    private List<Object> clusteringsFrom = new ArrayList<Object>();
    private List<Object> clusteringsTo = new ArrayList<Object>();
    private OrderingMode ordering;
    private BoundingMode bounding;
    private ConsistencyLevel consistencyLevel;
    private int batchSize;
    private int limit;
    private boolean limitSet;
    private boolean noComponent;

    public SliceQuery(Class<T> entityClass, EntityMeta meta, List<Object> partitionComponents,
            List<Object> clusteringsFrom, List<Object> clusteringsTo, OrderingMode ordering, BoundingMode bounding,
            ConsistencyLevel consistencyLevel, int limit, int batchSize, boolean limitSet) {

        this.limitSet = limitSet;
        Validator.validateTrue(CollectionUtils.isNotEmpty(partitionComponents),
                "Partition components should be set for slice query for entity class '%s'",
                entityClass.getCanonicalName());

        this.entityClass = entityClass;
        this.meta = meta;

        this.partitionComponents = partitionComponents;
        this.noComponent = clusteringsFrom.isEmpty() && clusteringsTo.isEmpty();

        PropertyMeta idMeta = meta.getIdMeta();

        List<Object> componentsFrom = new ArrayList<Object>();
        componentsFrom.addAll(partitionComponents);
        componentsFrom.addAll(clusteringsFrom);

        this.clusteringsFrom = idMeta.encodeToComponents(componentsFrom);

        List<Object> componentsTo = new ArrayList<Object>();
        componentsTo.addAll(partitionComponents);
        componentsTo.addAll(clusteringsTo);

        this.clusteringsTo = idMeta.encodeToComponents(componentsTo);

        this.ordering = ordering;
        this.bounding = bounding;
        this.consistencyLevel = consistencyLevel;
        this.limit = limit;
        this.batchSize = batchSize;
    }

    public Class<T> getEntityClass() {
        return entityClass;
    }

    public EntityMeta getMeta() {
        return meta;
    }

    public PropertyMeta getIdMeta() {
        return meta.getIdMeta();
    }

    boolean hasReversedClustering() {
        return getIdMeta().hasReversedComponent();
    }

    public List<Object> getPartitionComponents() {
        return partitionComponents;
    }

    public int partitionComponentsSize() {
        return partitionComponents != null ? partitionComponents.size() : 0;
    }

    public List<Object> getClusteringsFrom() {
        return clusteringsFrom;
    }

    public List<Object> getClusteringsTo() {
        return clusteringsTo;
    }

    public OrderingMode getOrdering() {
        return hasReversedClustering() ? ordering.reverse() : ordering;
    }

    public BoundingMode getBounding() {
        return bounding;
    }

    public ConsistencyLevel getConsistencyLevel() {
        return consistencyLevel;
    }

    public int getLimit() {
        return limit;
    }

    public int getBatchSize() {
        return batchSize;
    }

    public boolean isLimitSet() {
        return limitSet;
    }

    public boolean hasNoComponent() {
        return noComponent;
    }

}