/*
* 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 com.facebook.presto.operator;
import com.facebook.presto.spi.Page;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.block.BlockAssertions;
import com.facebook.presto.spi.type.Type;
import java.util.List;
import static com.facebook.presto.spi.type.BooleanType.BOOLEAN;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
public final class SequencePageBuilder
{
private SequencePageBuilder()
{
}
public static Page createSequencePage(List<? extends Type> types, int length, int... initialValues)
{
Block[] blocks = new Block[initialValues.length];
for (int i = 0; i < blocks.length; i++) {
Type type = types.get(i);
int initialValue = initialValues[i];
if (type.equals(BIGINT)) {
blocks[i] = BlockAssertions.createLongSequenceBlock(initialValue, initialValue + length);
}
else if (type.equals(DOUBLE)) {
blocks[i] = BlockAssertions.createDoubleSequenceBlock(initialValue, initialValue + length);
}
else if (type.equals(VARCHAR)) {
blocks[i] = BlockAssertions.createStringSequenceBlock(initialValue, initialValue + length);
}
else if (type.equals(BOOLEAN)) {
blocks[i] = BlockAssertions.createBooleanSequenceBlock(initialValue, initialValue + length);
}
else {
throw new IllegalStateException("Unsupported type " + type);
}
}
return new Page(blocks);
}
}