io.vertx.sqlclient.impl.ArrayTuple Maven / Gradle / Ivy
/*
* Copyright (C) 2017 Julien Viet
*
* 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 io.vertx.sqlclient.impl;
import io.vertx.sqlclient.Tuple;
import java.util.Arrays;
import java.util.Collection;
public class ArrayTuple extends TupleInternal {
private static final Object[] EMPTY_ARRAY = new Object[0];
public static Tuple EMPTY = new ArrayTuple(0);
private Object[] values;
private int size;
public ArrayTuple(int len) {
values = len == 0 ? EMPTY_ARRAY : new Object[len];
size = 0;
}
public ArrayTuple(Collection c) {
values = new Object[c.size()];
size = 0;
for (Object elt : c) {
addValue(elt);
}
}
public ArrayTuple(Tuple tuple) {
values = new Object[tuple.size()];
size = values.length;
for (int idx = 0;idx < size;idx++) {
values[idx] = tuple.getValue(idx);
}
}
@Override
public Object getValueInternal(int pos) {
return pos >= 0 && pos < size ? values[pos] : null;
}
@Override
public Tuple addValue(Object value) {
if (size >= values.length) {
Object[] copy = new Object[(values.length << 1) + 1];
System.arraycopy(values, 0, copy, 0, values.length);
values = copy;
}
values[size++] = value;
return this;
}
@Override
public int size() {
return size;
}
@Override
public void clear() {
Arrays.fill(values, null);
size = 0;
}
@Override
public void setValue(int pos, Object value) {
if (pos < 0) {
throw new IndexOutOfBoundsException("Invalid position " + pos + ": must be >= 0");
}
if (pos >= size) {
throw new IndexOutOfBoundsException("Invalid position " + pos + ": must be < " + size);
}
values[pos] = value;
}
}