org.socialsignin.spring.data.dynamodb.repository.query.PartTreeDynamoDBQuery.java Source code

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Here is the source code for org.socialsignin.spring.data.dynamodb.repository.query.PartTreeDynamoDBQuery.java

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/*
 * Copyright 2013 the original author or authors.
 *
 * 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.socialsignin.spring.data.dynamodb.repository.query;

import java.io.Serializable;

import org.socialsignin.spring.data.dynamodb.core.DynamoDBOperations;
import org.socialsignin.spring.data.dynamodb.query.Query;
import org.springframework.data.repository.query.Parameters;
import org.springframework.data.repository.query.ParametersParameterAccessor;
import org.springframework.data.repository.query.RepositoryQuery;
import org.springframework.data.repository.query.parser.PartTree;

/**
 * @author Michael Lavelle
 */
public class PartTreeDynamoDBQuery<T, ID extends Serializable> extends AbstractDynamoDBQuery<T, ID>
        implements RepositoryQuery {

    private DynamoDBQueryMethod<T, ID> queryMethod;
    private final Parameters<?, ?> parameters;

    private final PartTree tree;

    public PartTreeDynamoDBQuery(DynamoDBOperations dynamoDBOperations, DynamoDBQueryMethod<T, ID> method) {
        super(dynamoDBOperations, method);
        this.queryMethod = method;
        this.parameters = method.getParameters();
        this.tree = new PartTree(method.getName(), method.getEntityType());
    }

    public PartTree getTree() {
        return tree;
    }

    protected DynamoDBQueryCreator<T, ID> createQueryCreator(ParametersParameterAccessor accessor) {
        return new DynamoDBQueryCreator<T, ID>(tree, accessor, queryMethod.getEntityInformation(),
                dynamoDBOperations);
    }

    protected DynamoDBCountQueryCreator<T, ID> createCountQueryCreator(ParametersParameterAccessor accessor,
            boolean pageQuery) {
        return new DynamoDBCountQueryCreator<T, ID>(tree, accessor, queryMethod.getEntityInformation(),
                dynamoDBOperations, pageQuery);
    }

    @Override
    public Query<T> doCreateQuery(Object[] values) {

        ParametersParameterAccessor accessor = new ParametersParameterAccessor(parameters, values);
        DynamoDBQueryCreator<T, ID> queryCreator = createQueryCreator(accessor);
        return queryCreator.createQuery();

    }

    @Override
    public Query<Long> doCreateCountQuery(Object[] values, boolean pageQuery) {

        ParametersParameterAccessor accessor = new ParametersParameterAccessor(parameters, values);
        DynamoDBCountQueryCreator<T, ID> queryCreator = createCountQueryCreator(accessor, pageQuery);
        return queryCreator.createQuery();

    }

    @Override
    protected boolean isCountQuery() {
        return tree.isCountProjection();
    }

    @Override
    protected Integer getResultsRestrictionIfApplicable() {

        if (tree.isLimiting()) {
            return tree.getMaxResults();
        }
        return null;
    }

    @Override
    protected boolean isSingleEntityResultsRestriction() {
        Integer resultsRestiction = getResultsRestrictionIfApplicable();
        return resultsRestiction != null && resultsRestiction.intValue() == 1;
    }

}