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/*
* 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 com.datastax.oss.driver.internal.core.cql;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.cql.ColumnDefinition;
import com.datastax.oss.driver.api.core.cql.ColumnDefinitions;
import com.datastax.oss.driver.api.core.detach.AttachmentPoint;
import com.datastax.oss.driver.internal.core.data.IdentifierIndex;
import edu.umd.cs.findbugs.annotations.NonNull;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import net.jcip.annotations.Immutable;
@Immutable
public class DefaultColumnDefinitions implements ColumnDefinitions, Serializable {
public static ColumnDefinitions valueOf(List definitions) {
return definitions.isEmpty()
? EmptyColumnDefinitions.INSTANCE
: new DefaultColumnDefinitions(definitions);
}
private final List definitions;
private final IdentifierIndex index;
private DefaultColumnDefinitions(List definitions) {
assert definitions != null && definitions.size() > 0;
this.definitions = definitions;
this.index = buildIndex(definitions);
}
@Override
public int size() {
return definitions.size();
}
@NonNull
@Override
public ColumnDefinition get(int i) {
return definitions.get(i);
}
@NonNull
@Override
public Iterator iterator() {
return definitions.iterator();
}
@Override
public boolean contains(@NonNull String name) {
return index.firstIndexOf(name) >= 0;
}
@Override
public boolean contains(@NonNull CqlIdentifier id) {
return index.firstIndexOf(id) >= 0;
}
@NonNull
@Override
public List allIndicesOf(@NonNull String name) {
return index.allIndicesOf(name);
}
@Override
public int firstIndexOf(@NonNull String name) {
return index.firstIndexOf(name);
}
@NonNull
@Override
public List allIndicesOf(@NonNull CqlIdentifier id) {
return index.allIndicesOf(id);
}
@Override
public int firstIndexOf(@NonNull CqlIdentifier id) {
return index.firstIndexOf(id);
}
@Override
public boolean isDetached() {
return definitions.get(0).isDetached();
}
@Override
public void attach(@NonNull AttachmentPoint attachmentPoint) {
for (ColumnDefinition definition : definitions) {
definition.attach(attachmentPoint);
}
}
private static IdentifierIndex buildIndex(List definitions) {
List identifiers = new ArrayList<>(definitions.size());
for (ColumnDefinition definition : definitions) {
identifiers.add(definition.getName());
}
return new IdentifierIndex(identifiers);
}
/**
* @serialData The list of definitions (the identifier index is reconstructed at deserialization).
*/
private Object writeReplace() {
return new SerializationProxy(this);
}
private void readObject(@SuppressWarnings("unused") ObjectInputStream stream)
throws InvalidObjectException {
// Should never be called since we serialized a proxy
throw new InvalidObjectException("Proxy required");
}
private static class SerializationProxy implements Serializable {
private static final long serialVersionUID = 1;
private final List definitions;
private SerializationProxy(DefaultColumnDefinitions columnDefinitions) {
this.definitions = columnDefinitions.definitions;
}
private Object readResolve() {
return new DefaultColumnDefinitions(this.definitions);
}
}
}