CassandraParametersParameterAccessor.java

/*
 * Copyright 2016 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.springframework.data.cassandra.repository.query;

import java.util.Arrays;
import java.util.List;

import org.springframework.data.cassandra.mapping.CassandraSimpleTypeHolder;
import org.springframework.data.cassandra.mapping.CassandraType;
import org.springframework.data.repository.query.ParameterAccessor;
import org.springframework.data.repository.query.ParametersParameterAccessor;

import com.datastax.driver.core.DataType;

/**
 * Cassandra-specific {@link ParameterAccessor} exposing Cassandra {@link DataType types} that are supported by the
 * driver and parameter type.
 *
 * @author Mark Paluch
 * @see org.springframework.data.cassandra.repository.query.CassandraParameterAccessor
 * @see org.springframework.data.repository.query.ParametersParameterAccessor
 */
public class CassandraParametersParameterAccessor extends ParametersParameterAccessor
		implements CassandraParameterAccessor {

	private final List<Object> values;

	/**
	 * Create a new {@link CassandraParametersParameterAccessor}.
	 *
	 * @param method must not be {@literal null}.
	 * @param values must not be {@literal null}.
	 */
	public CassandraParametersParameterAccessor(CassandraQueryMethod method, Object... values) {

		super(method.getParameters(), values);
		this.values = Arrays.asList(values);
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.cassandra.repository.query.CassandraParameterAccessor#findCassandraType(int)
	 */
	public CassandraType findCassandraType(int index) {
		return getParameters().getParameter(index).getCassandraType();
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.cassandra.repository.query.CassandraParameterAccessor#getDataType(int)
	 */
	@Override
	public DataType getDataType(int index) {

		CassandraType cassandraType = findCassandraType(index);

		return (cassandraType != null ? CassandraSimpleTypeHolder.getDataTypeFor(cassandraType.type())
				: CassandraSimpleTypeHolder.getDataTypeFor(getParameterType(index)));
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.repository.query.ParametersParameterAccessor#getParameters()
	 */
	@Override
	public CassandraParameters getParameters() {
		return (CassandraParameters) super.getParameters();
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.cassandra.repository.query.CassandraParameterAccessor#getParameterType(int)
	 */
	@Override
	public Class<?> getParameterType(int index) {
		return getParameters().getParameter(index).getType();
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.mongodb.repository.query.CassandraParameterAccessor#getValues()
	 */
	@Override
	public Object[] getValues() {
		return values.toArray();
	}
}