| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.cassandra.spark.data.complex; |
| |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| import org.apache.commons.lang.builder.EqualsBuilder; |
| import org.apache.commons.lang.builder.HashCodeBuilder; |
| |
| import com.esotericsoftware.kryo.io.Input; |
| import com.esotericsoftware.kryo.io.Output; |
| import org.apache.cassandra.bridge.CassandraBridge; |
| import org.apache.cassandra.db.marshal.AbstractType; |
| import org.apache.cassandra.spark.data.CqlField; |
| import org.apache.cassandra.spark.data.CqlType; |
| |
| public abstract class CqlCollection extends CqlType implements CqlField.CqlCollection |
| { |
| public final List<CqlField.CqlType> types; |
| private final int hashCode; |
| |
| CqlCollection(CqlField.CqlType type) |
| { |
| this(Collections.singletonList(type)); |
| } |
| |
| CqlCollection(CqlField.CqlType... types) |
| { |
| this(Arrays.asList(types)); |
| } |
| |
| CqlCollection(List<CqlField.CqlType> types) |
| { |
| this.types = new ArrayList<>(types); |
| this.hashCode = new HashCodeBuilder() |
| .append(types.toArray(new CqlField.CqlType[0])) |
| .hashCode(); |
| } |
| |
| @Override |
| public Object toSparkSqlType(Object value) |
| { |
| return toSparkSqlType(value, false); |
| } |
| |
| @Override |
| public AbstractType<?> dataType() |
| { |
| return dataType(true); |
| } |
| |
| @Override |
| public ByteBuffer serialize(Object value) |
| { |
| return serializer().serialize(value); |
| } |
| |
| @Override |
| public Object deserialize(ByteBuffer buffer) |
| { |
| return deserialize(buffer, false); |
| } |
| |
| @Override |
| public Object deserialize(ByteBuffer buffer, boolean isFrozen) |
| { |
| Object value = serializer().deserialize(buffer); |
| return value != null ? toSparkSqlType(value) : null; |
| } |
| |
| @Override |
| public boolean isSupported() |
| { |
| return true; |
| } |
| |
| public static CqlCollection build(String name, CqlField.CqlType... types) |
| { |
| return build(CqlField.CqlType.InternalType.fromString(name), types); |
| } |
| |
| public static CqlCollection build(CqlField.CqlType.InternalType internalType, CqlField.CqlType... types) |
| { |
| if (types.length < 1 || types[0] == null) |
| { |
| throw new IllegalArgumentException("Collection type requires a non-null key data type"); |
| } |
| |
| switch (internalType) |
| { |
| case Set: |
| return set(types[0]); |
| case List: |
| return list(types[0]); |
| case Map: |
| if (types.length < 2 || types[1] == null) |
| { |
| throw new IllegalArgumentException("Map collection type requires a non-null value data type"); |
| } |
| return map(types[0], types[1]); |
| case Tuple: |
| return tuple(types); |
| default: |
| throw new IllegalArgumentException("Unknown collection type: " + internalType); |
| } |
| } |
| |
| public static CqlList list(CqlField.CqlType type) |
| { |
| return new CqlList(type); |
| } |
| |
| public static CqlSet set(CqlField.CqlType type) |
| { |
| return new CqlSet(type); |
| } |
| |
| public static CqlMap map(CqlField.CqlType keyType, CqlField.CqlType valueType) |
| { |
| return new CqlMap(keyType, valueType); |
| } |
| |
| public static CqlTuple tuple(CqlField.CqlType... types) |
| { |
| return new CqlTuple(types); |
| } |
| |
| public int size() |
| { |
| return types.size(); |
| } |
| |
| public List<CqlField.CqlType> types() |
| { |
| return types; |
| } |
| |
| public CqlField.CqlType type() |
| { |
| return type(0); |
| } |
| |
| public CqlField.CqlType type(int position) |
| { |
| return types.get(position); |
| } |
| |
| public CqlFrozen frozen() |
| { |
| return CqlFrozen.build(this); |
| } |
| |
| public String cqlName() |
| { |
| return String.format("%s<%s>", internalType().name().toLowerCase(), types.stream() |
| .map(CqlField.CqlType::cqlName) |
| .collect(Collectors.joining(", "))); |
| } |
| |
| @Override |
| public Set<CqlField.CqlUdt> udts() |
| { |
| return types.stream() |
| .map(CqlField.CqlType::udts) |
| .flatMap(Collection::stream) |
| .collect(Collectors.toSet()); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return cqlName(); |
| } |
| |
| public static CqlCollection read(CqlField.CqlType.InternalType internalType, Input input, CassandraBridge bridge) |
| { |
| int numTypes = input.readInt(); |
| CqlField.CqlType[] types = new CqlField.CqlType[numTypes]; |
| for (int type = 0; type < numTypes; type++) |
| { |
| types[type] = CqlField.CqlType.read(input, bridge); |
| } |
| return CqlCollection.build(internalType, types); |
| } |
| |
| @Override |
| public void write(Output output) |
| { |
| CqlField.CqlType.write(this, output); |
| output.writeInt(this.types.size()); |
| for (CqlField.CqlType type : this.types) |
| { |
| type.write(output); |
| } |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return hashCode; |
| } |
| |
| @Override |
| public boolean equals(Object other) |
| { |
| if (other == null) |
| { |
| return false; |
| } |
| if (this == other) |
| { |
| return true; |
| } |
| if (this.getClass() != other.getClass()) |
| { |
| return false; |
| } |
| |
| CqlCollection that = (CqlCollection) other; |
| return new EqualsBuilder() |
| .append(this.internalType(), that.internalType()) |
| .append(this.types, that.types) |
| .isEquals(); |
| } |
| } |