/*
* Copyright 2013-2014 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.mapping;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.mapping.model.SimpleTypeHolder;
import org.springframework.data.util.TypeInformation;
import com.datastax.driver.core.DataType;
/**
* Simple constant holder for a {@link SimpleTypeHolder} enriched with Cassandra specific simple types.
*
* @author Alex Shvid
* @author Matthew T. Adams
*/
public class CassandraSimpleTypeHolder extends SimpleTypeHolder {
public static final Set<Class<?>> CASSANDRA_SIMPLE_TYPES;
private static final Map<Class<?>, Class<?>> primitiveTypesByWrapperType = new HashMap<Class<?>, Class<?>>(8);
private static final Map<Class<?>, DataType> dataTypesByJavaClass = new HashMap<Class<?>, DataType>();
private static final Map<DataType.Name, DataType> dataTypesByDataTypeName = new HashMap<DataType.Name, DataType>();
static {
primitiveTypesByWrapperType.put(Boolean.class, boolean.class);
primitiveTypesByWrapperType.put(Byte.class, byte.class);
primitiveTypesByWrapperType.put(Character.class, char.class);
primitiveTypesByWrapperType.put(Double.class, double.class);
primitiveTypesByWrapperType.put(Float.class, float.class);
primitiveTypesByWrapperType.put(Integer.class, int.class);
primitiveTypesByWrapperType.put(Long.class, long.class);
primitiveTypesByWrapperType.put(Short.class, short.class);
Set<Class<?>> simpleTypes = new HashSet<Class<?>>();
for (DataType dataType : DataType.allPrimitiveTypes()) {
Class<?> javaClass = dataType.asJavaClass();
simpleTypes.add(javaClass);
dataTypesByJavaClass.put(javaClass, dataType);
Class<?> primitiveJavaClass = primitiveTypesByWrapperType.get(javaClass);
if (primitiveJavaClass != null) {
dataTypesByJavaClass.put(primitiveJavaClass, dataType);
}
dataTypesByDataTypeName.put(dataType.getName(), dataType);
}
dataTypesByJavaClass.put(String.class, DataType.text());
CASSANDRA_SIMPLE_TYPES = Collections.unmodifiableSet(simpleTypes);
}
public static DataType getDataTypeFor(DataType.Name name) {
return dataTypesByDataTypeName.get(name);
}
public static DataType getDataTypeFor(Class<?> javaClass) {
return dataTypesByJavaClass.get(javaClass);
}
public static DataType.Name[] getDataTypeNamesFrom(List<TypeInformation<?>> arguments) {
DataType.Name[] array = new DataType.Name[arguments.size()];
for (int i = 0; i != array.length; i++) {
TypeInformation<?> typeInfo = arguments.get(i);
DataType dataType = getDataTypeFor(typeInfo.getType());
if (dataType == null) {
throw new InvalidDataAccessApiUsageException("not found appropriate primitive DataType for type = '"
+ typeInfo.getType());
}
array[i] = dataType.getName();
}
return array;
}
public CassandraSimpleTypeHolder() {
super(CASSANDRA_SIMPLE_TYPES, true);
}
}