/*
* 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.block;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.block.BlockBuilderStatus;
import com.facebook.presto.spi.block.BlockCursor;
import com.facebook.presto.spi.type.Type;
import com.google.common.base.Function;
import com.google.common.collect.ContiguousSet;
import com.google.common.collect.DiscreteDomain;
import com.google.common.collect.Iterables;
import com.google.common.collect.Range;
import io.airlift.slice.Slice;
import io.airlift.slice.Slices;
import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import static com.facebook.presto.block.BlockIterables.createBlockIterable;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
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.TimeZoneKey.UTC_KEY;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;
public final class BlockAssertions
{
public static final ConnectorSession SESSION = new ConnectorSession("user", "source", "catalog", "schema", UTC_KEY, Locale.ENGLISH, "address", "agent");
private BlockAssertions()
{
}
public static Object getOnlyValue(Block block)
{
assertEquals(block.getPositionCount(), 1, "Block positions");
BlockCursor cursor = block.cursor();
assertTrue(cursor.advanceNextPosition());
Object value = cursor.getObjectValue(SESSION);
assertFalse(cursor.advanceNextPosition());
return value;
}
public static void assertBlocksEquals(BlockIterable actual, BlockIterable expected)
{
Iterator<Block> expectedIterator = expected.iterator();
for (Block actualBlock : actual) {
assertTrue(expectedIterator.hasNext());
Block expectedBlock = expectedIterator.next();
assertBlockEquals(actualBlock, expectedBlock);
}
assertFalse(expectedIterator.hasNext());
}
public static List<Object> toValues(BlockIterable blocks)
{
List<Object> values = new ArrayList<>();
for (Block block : blocks) {
BlockCursor cursor = block.cursor();
while (cursor.advanceNextPosition()) {
values.add(cursor.getObjectValue(SESSION));
}
}
return Collections.unmodifiableList(values);
}
public static List<Object> toValues(Block block)
{
BlockCursor cursor = block.cursor();
return toValues(cursor);
}
public static List<Object> toValues(BlockCursor cursor)
{
List<Object> values = new ArrayList<>();
while (cursor.advanceNextPosition()) {
values.add(cursor.getObjectValue(SESSION));
}
return Collections.unmodifiableList(values);
}
public static void assertBlockEquals(Block actual, Block expected)
{
assertEquals(actual.getType(), expected.getType());
assertCursorsEquals(actual.cursor(), expected.cursor());
}
public static void assertCursorsEquals(BlockCursor actualCursor, BlockCursor expectedCursor)
{
assertEquals(actualCursor.getType(), expectedCursor.getType());
while (advanceAllCursorsToNextPosition(actualCursor, expectedCursor)) {
assertEquals(actualCursor.getObjectValue(SESSION), expectedCursor.getObjectValue(SESSION));
}
assertTrue(actualCursor.isFinished());
assertTrue(expectedCursor.isFinished());
}
public static boolean advanceAllCursorsToNextPosition(BlockCursor... cursors)
{
boolean allAdvanced = true;
for (BlockCursor cursor : cursors) {
allAdvanced = cursor.advanceNextPosition() && allAdvanced;
}
return allAdvanced;
}
public static Iterable<Long> createLongSequence(long start, long end)
{
return ContiguousSet.create(Range.closedOpen(start, end), DiscreteDomain.longs());
}
public static Iterable<Double> createDoubleSequence(long start, long end)
{
return Iterables.transform(createLongSequence(start, end), new Function<Long, Double>()
{
@Override
public Double apply(Long input)
{
return (double) input;
}
});
}
public static Iterable<String> createStringSequence(long start, long end)
{
return Iterables.transform(createLongSequence(start, end), new Function<Long, String>()
{
@Override
public String apply(Long input)
{
return String.valueOf(input);
}
});
}
public static Iterable<Long> createLongNullSequence(int count)
{
Long[] values = new Long[count];
Arrays.fill(values, null);
return Arrays.asList(values);
}
public static Iterable<Double> createDoubleNullSequence(int count)
{
Double[] values = new Double[count];
Arrays.fill(values, null);
return Arrays.asList(values);
}
public static Iterable<String> createStringNullSequence(int count)
{
String[] values = new String[count];
Arrays.fill(values, null);
return Arrays.asList(values);
}
public static Block createStringsBlock(String... values)
{
checkNotNull(values, "varargs 'values' is null");
return createStringsBlock(Arrays.asList(values));
}
public static Block createStringsBlock(Iterable<String> values)
{
BlockBuilder builder = VARCHAR.createBlockBuilder(new BlockBuilderStatus());
for (String value : values) {
if (value == null) {
builder.appendNull();
}
else {
builder.appendSlice(Slices.utf8Slice(value));
}
}
return builder.build();
}
public static BlockIterable createStringsBlockIterable(@Nullable String... values)
{
return createBlockIterable(createStringsBlock(values));
}
public static Block createStringSequenceBlock(int start, int end)
{
BlockBuilder builder = VARCHAR.createBlockBuilder(new BlockBuilderStatus());
for (int i = start; i < end; i++) {
builder.appendSlice(Slices.utf8Slice(String.valueOf(i)));
}
return builder.build();
}
public static Block createBooleansBlock(Boolean... values)
{
checkNotNull(values, "varargs 'values' is null");
return createBooleansBlock(Arrays.asList(values));
}
public static Block createBooleansBlock(Boolean value, int count)
{
return createBooleansBlock(Collections.nCopies(count, value));
}
public static Block createBooleansBlock(Iterable<Boolean> values)
{
BlockBuilder builder = BOOLEAN.createBlockBuilder(new BlockBuilderStatus());
for (Boolean value : values) {
if (value == null) {
builder.appendNull();
}
else {
builder.appendBoolean(value);
}
}
return builder.build();
}
// This method makes it easy to create blocks without having to add an L to every value
public static Block createLongsBlock(int... values)
{
BlockBuilder builder = BIGINT.createBlockBuilder(new BlockBuilderStatus());
for (int value : values) {
builder.appendLong((long) value);
}
return builder.build();
}
public static Block createLongsBlock(Long... values)
{
checkNotNull(values, "varargs 'values' is null");
return createLongsBlock(Arrays.asList(values));
}
public static Block createLongsBlock(Iterable<Long> values)
{
BlockBuilder builder = BIGINT.createBlockBuilder(new BlockBuilderStatus());
for (Long value : values) {
if (value == null) {
builder.appendNull();
}
else {
builder.appendLong(value);
}
}
return builder.build();
}
public static BlockIterable createLongsBlockIterable(int... values)
{
return createBlockIterable(createLongsBlock(values));
}
public static BlockIterable createLongsBlockIterable(@Nullable Long... values)
{
return createBlockIterable(createLongsBlock(values));
}
public static Block createLongSequenceBlock(int start, int end)
{
BlockBuilder builder = BIGINT.createBlockBuilder(new BlockBuilderStatus());
for (int i = start; i < end; i++) {
builder.appendLong(i);
}
return builder.build();
}
public static Block createBooleanSequenceBlock(int start, int end)
{
BlockBuilder builder = BOOLEAN.createBlockBuilder(new BlockBuilderStatus());
for (int i = start; i < end; i++) {
builder.appendBoolean(i % 2 == 0);
}
return builder.build();
}
public static Block createDoublesBlock(Double... values)
{
checkNotNull(values, "varargs 'values' is null");
return createDoublesBlock(Arrays.asList(values));
}
public static Block createDoublesBlock(Iterable<Double> values)
{
BlockBuilder builder = DOUBLE.createBlockBuilder(new BlockBuilderStatus());
for (Double value : values) {
if (value == null) {
builder.appendNull();
}
else {
builder.appendDouble(value);
}
}
return builder.build();
}
public static BlockIterable createDoublesBlockIterable(@Nullable Double... values)
{
return createBlockIterable(createDoublesBlock(values));
}
public static Block createDoubleSequenceBlock(int start, int end)
{
BlockBuilder builder = DOUBLE.createBlockBuilder(new BlockBuilderStatus());
for (int i = start; i < end; i++) {
builder.appendDouble((double) i);
}
return builder.build();
}
public static BlockIterableBuilder blockIterableBuilder(Type type)
{
return new BlockIterableBuilder(type);
}
public static class BlockIterableBuilder
{
private final List<Block> blocks = new ArrayList<>();
private BlockBuilder blockBuilder;
private BlockIterableBuilder(Type type)
{
blockBuilder = type.createBlockBuilder(new BlockBuilderStatus());
}
public BlockIterableBuilder append(Slice value)
{
blockBuilder.appendSlice(value);
return this;
}
public BlockIterableBuilder append(double value)
{
blockBuilder.appendDouble(value);
return this;
}
public BlockIterableBuilder append(long value)
{
blockBuilder.appendLong(value);
return this;
}
public BlockIterableBuilder append(String value)
{
blockBuilder.appendSlice(Slices.utf8Slice(value));
return this;
}
public BlockIterableBuilder append(byte[] value)
{
blockBuilder.appendSlice(Slices.wrappedBuffer(value));
return this;
}
public BlockIterableBuilder appendNull()
{
blockBuilder.appendNull();
return this;
}
public BlockIterableBuilder newBlock()
{
if (!blockBuilder.isEmpty()) {
Block block = blockBuilder.build();
blocks.add(block);
blockBuilder = block.getType().createBlockBuilder(new BlockBuilderStatus());
}
return this;
}
public BlockIterable build()
{
newBlock();
return createBlockIterable(blocks);
}
}
}