/*
* 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.ignite.internal.util.lang;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.apache.ignite.internal.util.tostring.GridToStringInclude;
import org.apache.ignite.internal.util.typedef.F;
import org.apache.ignite.internal.util.typedef.internal.S;
import org.jetbrains.annotations.Nullable;
/**
* Convenience class representing mutable tuple of three values.
* <h2 class="header">Thread Safety</h2>
* This class doesn't provide any synchronization for multi-threaded access
* and it is responsibility of the user of this class to provide outside
* synchronization, if needed.
*/
public class GridTuple3<V1, V2, V3> implements Iterable<Object>, Externalizable, Cloneable {
/** */
private static final long serialVersionUID = 0L;
/** Value 1. */
@GridToStringInclude
private V1 val1;
/** Value 2. */
@GridToStringInclude
private V2 val2;
/** Value 3. */
@GridToStringInclude
private V3 val3;
/**
* Empty constructor required by {@link Externalizable}.
*/
public GridTuple3() {
// No-op.
}
/**
* Fully initializes this tuple.
*
* @param val1 First value.
* @param val2 Second value.
* @param val3 Third value.
*/
public GridTuple3(@Nullable V1 val1, @Nullable V2 val2, @Nullable V3 val3) {
this.val1 = val1;
this.val2 = val2;
this.val3 = val3;
}
/**
* Gets first value.
*
* @return First value.
*/
@Nullable public V1 get1() {
return val1;
}
/**
* Gets second value.
*
* @return Second value.
*/
@Nullable public V2 get2() {
return val2;
}
/**
* Gets third value.
*
* @return Third value.
*/
@Nullable public V3 get3() {
return val3;
}
/**
* Sets first value.
*
* @param val1 First value.
*/
public void set1(@Nullable V1 val1) {
this.val1 = val1;
}
/**
* Sets second value.
*
* @param val2 Second value.
*/
public void set2(@Nullable V2 val2) {
this.val2 = val2;
}
/**
* Sets third value.
*
* @param val3 Third value.
*/
public void set3(@Nullable V3 val3) {
this.val3 = val3;
}
/**
* Sets all values.
*
* @param val1 First value.
* @param val2 Second value.
* @param val3 Third value.
*/
public void set(@Nullable V1 val1, @Nullable V2 val2, @Nullable V3 val3) {
set1(val1);
set2(val2);
set3(val3);
}
/** {@inheritDoc} */
@Override public Iterator<Object> iterator() {
return new Iterator<Object>() {
private int nextIdx = 1;
@Override public boolean hasNext() {
return nextIdx < 4;
}
@Nullable @Override public Object next() {
if (!hasNext())
throw new NoSuchElementException();
Object res = null;
if (nextIdx == 1)
res = get1();
else if (nextIdx == 2)
res = get2();
else if (nextIdx == 3)
res = get3();
nextIdx++;
return res;
}
@Override public void remove() {
throw new UnsupportedOperationException();
}
};
}
/** {@inheritDoc} */
@SuppressWarnings({"OverriddenMethodCallDuringObjectConstruction", "CloneDoesntDeclareCloneNotSupportedException"})
@Override public Object clone() {
try {
return super.clone();
}
catch (CloneNotSupportedException ignore) {
throw new InternalError();
}
}
/** {@inheritDoc} */
@Override public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(val1);
out.writeObject(val2);
out.writeObject(val3);
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
val1 = (V1)in.readObject();
val2 = (V2)in.readObject();
val3 = (V3)in.readObject();
}
/** {@inheritDoc} */
@Override public boolean equals(Object o) {
if (this == o)
return true;
if (!(o instanceof GridTuple3))
return false;
GridTuple3<?, ?, ?> t = (GridTuple3<?, ?, ?>)o;
return F.eq(val1, t.val1) && F.eq(val2, t.val2) && F.eq(val3, t.val3);
}
/** {@inheritDoc} */
@Override public int hashCode() {
int res = val1 != null ? val1.hashCode() : 0;
res = 17 * res + (val2 != null ? val2.hashCode() : 0);
res = 31 * res + (val3 != null ? val3.hashCode() : 0);
return res;
}
/** {@inheritDoc} */
@Override public String toString() {
return S.toString(GridTuple3.class, this);
}
}