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188
presto-main/src/main/java/io/prestosql/type/BlockTypeOperators.java
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| /* | ||
| * 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.prestosql.type; | ||
|
|
||
| import io.prestosql.spi.block.Block; | ||
| import io.prestosql.spi.function.InvocationConvention; | ||
| import io.prestosql.spi.type.Type; | ||
| import io.prestosql.spi.type.TypeOperators; | ||
|
|
||
| import javax.annotation.concurrent.GuardedBy; | ||
| import javax.inject.Inject; | ||
|
|
||
| import java.lang.invoke.MethodHandle; | ||
| import java.util.Objects; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.ConcurrentMap; | ||
| import java.util.function.Supplier; | ||
|
|
||
| import static io.prestosql.spi.function.InvocationConvention.InvocationArgumentConvention.BLOCK_POSITION; | ||
| import static io.prestosql.spi.function.InvocationConvention.InvocationReturnConvention.FAIL_ON_NULL; | ||
| import static io.prestosql.spi.function.InvocationConvention.InvocationReturnConvention.NULLABLE_RETURN; | ||
| import static io.prestosql.spi.function.InvocationConvention.simpleConvention; | ||
| import static io.prestosql.type.SingleAccessMethodCompiler.compileSingleAccessMethod; | ||
| import static io.prestosql.type.TypeUtils.NULL_HASH_CODE; | ||
| import static java.util.Objects.requireNonNull; | ||
|
|
||
| public final class BlockTypeOperators | ||
| { | ||
| private static final InvocationConvention BLOCK_EQUAL_CONVENTION = simpleConvention(NULLABLE_RETURN, BLOCK_POSITION, BLOCK_POSITION); | ||
| private static final InvocationConvention HASH_CODE_CONVENTION = simpleConvention(FAIL_ON_NULL, BLOCK_POSITION); | ||
| private static final InvocationConvention XX_HASH_64_CONVENTION = simpleConvention(FAIL_ON_NULL, BLOCK_POSITION); | ||
| private static final InvocationConvention IS_DISTINCT_FROM_CONVENTION = simpleConvention(FAIL_ON_NULL, BLOCK_POSITION, BLOCK_POSITION); | ||
|
|
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| private final ConcurrentMap<GeneratedBlockOperatorKey<?>, GeneratedBlockOperator<?>> generatedBlockOperatorCache = new ConcurrentHashMap<>(); | ||
| private final TypeOperators typeOperators; | ||
|
|
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| @Inject | ||
| public BlockTypeOperators(TypeOperators typeOperators) | ||
| { | ||
| this.typeOperators = requireNonNull(typeOperators, "typeOperators is null"); | ||
| } | ||
|
|
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| public BlockPositionEqual getEqualOperator(Type type) | ||
| { | ||
| return getBlockOperator(type, BlockPositionEqual.class, () -> typeOperators.getEqualOperator(type, BLOCK_EQUAL_CONVENTION)); | ||
| } | ||
|
|
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| public interface BlockPositionEqual | ||
| { | ||
| Boolean equal(Block left, int leftPosition, Block right, int rightPosition); | ||
|
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| default boolean equalNullSafe(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition) | ||
| { | ||
| boolean leftIsNull = leftBlock.isNull(leftPosition); | ||
| boolean rightIsNull = rightBlock.isNull(rightPosition); | ||
| if (leftIsNull || rightIsNull) { | ||
| return leftIsNull && rightIsNull; | ||
| } | ||
| return equal(leftBlock, leftPosition, rightBlock, rightPosition); | ||
| } | ||
| } | ||
|
|
||
| public BlockPositionHashCode getHashCodeOperator(Type type) | ||
| { | ||
| return getBlockOperator(type, BlockPositionHashCode.class, () -> typeOperators.getHashCodeOperator(type, HASH_CODE_CONVENTION)); | ||
| } | ||
|
|
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| public interface BlockPositionHashCode | ||
| { | ||
| long hashCode(Block block, int position); | ||
|
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| default long hashCodeNullSafe(Block block, int position) | ||
| { | ||
| if (block.isNull(position)) { | ||
| return NULL_HASH_CODE; | ||
| } | ||
| return hashCode(block, position); | ||
| } | ||
| } | ||
|
|
||
| public BlockPositionXxHash64 getXxHash64Operator(Type type) | ||
| { | ||
| return getBlockOperator(type, BlockPositionXxHash64.class, () -> typeOperators.getXxHash64Operator(type, XX_HASH_64_CONVENTION)); | ||
| } | ||
|
|
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| public interface BlockPositionXxHash64 | ||
| { | ||
| long xxHash64(Block block, int position); | ||
| } | ||
|
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| public BlockPositionIsDistinctFrom getDistinctFromOperator(Type type) | ||
| { | ||
| return getBlockOperator(type, BlockPositionIsDistinctFrom.class, () -> typeOperators.getDistinctFromOperator(type, IS_DISTINCT_FROM_CONVENTION)); | ||
| } | ||
|
|
||
| public interface BlockPositionIsDistinctFrom | ||
| { | ||
| boolean isDistinctFrom(Block left, int leftPosition, Block right, int rightPosition); | ||
| } | ||
|
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| private <T> T getBlockOperator(Type type, Class<T> operatorInterface, Supplier<MethodHandle> methodHandleSupplier) | ||
| { | ||
| @SuppressWarnings("unchecked") | ||
| GeneratedBlockOperator<T> generatedBlockOperator = (GeneratedBlockOperator<T>) generatedBlockOperatorCache.computeIfAbsent( | ||
| new GeneratedBlockOperatorKey<>(type, operatorInterface), | ||
| key -> new GeneratedBlockOperator<>(key.getType(), key.getOperatorInterface(), methodHandleSupplier.get())); | ||
| return generatedBlockOperator.get(); | ||
| } | ||
|
|
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| private static class GeneratedBlockOperatorKey<T> | ||
| { | ||
| private final Type type; | ||
| private final Class<T> operatorInterface; | ||
|
|
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| public GeneratedBlockOperatorKey(Type type, Class<T> operatorInterface) | ||
| { | ||
| this.type = requireNonNull(type, "type is null"); | ||
| this.operatorInterface = requireNonNull(operatorInterface, "operatorInterface is null"); | ||
| } | ||
|
|
||
| public Type getType() | ||
| { | ||
| return type; | ||
| } | ||
|
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| public Class<T> getOperatorInterface() | ||
| { | ||
| return operatorInterface; | ||
| } | ||
|
|
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| @Override | ||
| public boolean equals(Object o) | ||
| { | ||
| if (this == o) { | ||
| return true; | ||
| } | ||
| if (o == null || getClass() != o.getClass()) { | ||
| return false; | ||
| } | ||
| GeneratedBlockOperatorKey<?> that = (GeneratedBlockOperatorKey<?>) o; | ||
| return type.equals(that.type) && | ||
| operatorInterface.equals(that.operatorInterface); | ||
| } | ||
|
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| @Override | ||
| public int hashCode() | ||
| { | ||
| return Objects.hash(type, operatorInterface); | ||
| } | ||
| } | ||
|
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| private static class GeneratedBlockOperator<T> | ||
| { | ||
| private final Type type; | ||
| private final Class<T> operatorInterface; | ||
| private final MethodHandle methodHandle; | ||
| @GuardedBy("this") | ||
| private T operator; | ||
|
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| public GeneratedBlockOperator(Type type, Class<T> operatorInterface, MethodHandle methodHandle) | ||
| { | ||
| this.type = requireNonNull(type, "type is null"); | ||
| this.operatorInterface = requireNonNull(operatorInterface, "operatorInterface is null"); | ||
| this.methodHandle = requireNonNull(methodHandle, "methodHandle is null"); | ||
| } | ||
|
|
||
| public synchronized T get() | ||
| { | ||
| if (operator != null) { | ||
| return operator; | ||
| } | ||
| String suggestedClassName = operatorInterface.getSimpleName() + "_" + type.getDisplayName(); | ||
| operator = compileSingleAccessMethod(suggestedClassName, operatorInterface, methodHandle); | ||
| return operator; | ||
| } | ||
| } | ||
| } |
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