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Add real operator support for new nan definition
This adds support for the new nan definition to =, <>, <, >, <=,>=, BETWEEN, IN, NOT IN for real types.
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145
presto-main/src/main/java/com/facebook/presto/type/LegacyRealComparisonOperators.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /* | ||
| * 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.type; | ||
|
|
||
| import com.facebook.presto.common.block.Block; | ||
| import com.facebook.presto.common.type.AbstractIntType; | ||
| import com.facebook.presto.common.type.StandardTypes; | ||
| import com.facebook.presto.spi.function.BlockIndex; | ||
| import com.facebook.presto.spi.function.BlockPosition; | ||
| import com.facebook.presto.spi.function.IsNull; | ||
| import com.facebook.presto.spi.function.ScalarOperator; | ||
| import com.facebook.presto.spi.function.SqlNullable; | ||
| import com.facebook.presto.spi.function.SqlType; | ||
|
|
||
| import static com.facebook.presto.common.function.OperatorType.BETWEEN; | ||
| import static com.facebook.presto.common.function.OperatorType.EQUAL; | ||
| import static com.facebook.presto.common.function.OperatorType.GREATER_THAN; | ||
| import static com.facebook.presto.common.function.OperatorType.GREATER_THAN_OR_EQUAL; | ||
| import static com.facebook.presto.common.function.OperatorType.HASH_CODE; | ||
| import static com.facebook.presto.common.function.OperatorType.IS_DISTINCT_FROM; | ||
| import static com.facebook.presto.common.function.OperatorType.LESS_THAN; | ||
| import static com.facebook.presto.common.function.OperatorType.LESS_THAN_OR_EQUAL; | ||
| import static com.facebook.presto.common.function.OperatorType.NOT_EQUAL; | ||
| import static com.facebook.presto.common.type.RealType.REAL; | ||
| import static java.lang.Float.floatToIntBits; | ||
| import static java.lang.Float.intBitsToFloat; | ||
|
|
||
| @Deprecated | ||
| public final class LegacyRealComparisonOperators | ||
| { | ||
| private LegacyRealComparisonOperators() | ||
| { | ||
| } | ||
|
|
||
| @ScalarOperator(EQUAL) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| @SqlNullable | ||
| public static Boolean equal(@SqlType(StandardTypes.REAL) long left, @SqlType(StandardTypes.REAL) long right) | ||
| { | ||
| return intBitsToFloat((int) left) == intBitsToFloat((int) right); | ||
| } | ||
|
|
||
| @ScalarOperator(NOT_EQUAL) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| @SqlNullable | ||
| public static Boolean notEqual(@SqlType(StandardTypes.REAL) long left, @SqlType(StandardTypes.REAL) long right) | ||
| { | ||
| return intBitsToFloat((int) left) != intBitsToFloat((int) right); | ||
| } | ||
|
|
||
| @ScalarOperator(LESS_THAN) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean lessThan(@SqlType(StandardTypes.REAL) long left, @SqlType(StandardTypes.REAL) long right) | ||
| { | ||
| return intBitsToFloat((int) left) < intBitsToFloat((int) right); | ||
| } | ||
|
|
||
| @ScalarOperator(LESS_THAN_OR_EQUAL) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean lessThanOrEqual(@SqlType(StandardTypes.REAL) long left, @SqlType(StandardTypes.REAL) long right) | ||
| { | ||
| return intBitsToFloat((int) left) <= intBitsToFloat((int) right); | ||
| } | ||
|
|
||
| @ScalarOperator(GREATER_THAN) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean greaterThan(@SqlType(StandardTypes.REAL) long left, @SqlType(StandardTypes.REAL) long right) | ||
| { | ||
| return intBitsToFloat((int) left) > intBitsToFloat((int) right); | ||
| } | ||
|
|
||
| @ScalarOperator(GREATER_THAN_OR_EQUAL) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean greaterThanOrEqual(@SqlType(StandardTypes.REAL) long left, @SqlType(StandardTypes.REAL) long right) | ||
| { | ||
| return intBitsToFloat((int) left) >= intBitsToFloat((int) right); | ||
| } | ||
|
|
||
| @ScalarOperator(BETWEEN) | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean between(@SqlType(StandardTypes.REAL) long value, @SqlType(StandardTypes.REAL) long min, @SqlType(StandardTypes.REAL) long max) | ||
| { | ||
| return intBitsToFloat((int) min) <= intBitsToFloat((int) value) && | ||
| intBitsToFloat((int) value) <= intBitsToFloat((int) max); | ||
| } | ||
|
|
||
| @ScalarOperator(HASH_CODE) | ||
| @SqlType(StandardTypes.BIGINT) | ||
| public static long hashCode(@SqlType(StandardTypes.REAL) long value) | ||
| { | ||
| return AbstractIntType.hash(floatToIntBits(intBitsToFloat((int) value))); | ||
| } | ||
|
|
||
| @ScalarOperator(IS_DISTINCT_FROM) | ||
| public static class RealDistinctFromOperator | ||
| { | ||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean isDistinctFrom( | ||
| @SqlType(StandardTypes.REAL) long left, | ||
| @IsNull boolean leftNull, | ||
| @SqlType(StandardTypes.REAL) long right, | ||
| @IsNull boolean rightNull) | ||
| { | ||
| if (leftNull != rightNull) { | ||
| return true; | ||
| } | ||
| if (leftNull) { | ||
| return false; | ||
| } | ||
| float leftFloat = intBitsToFloat((int) left); | ||
| float rightFloat = intBitsToFloat((int) right); | ||
| if (Float.isNaN(leftFloat) && Float.isNaN(rightFloat)) { | ||
| return false; | ||
| } | ||
| return notEqual(left, right); | ||
| } | ||
|
|
||
| @SqlType(StandardTypes.BOOLEAN) | ||
| public static boolean isDistinctFrom( | ||
| @BlockPosition @SqlType(value = StandardTypes.REAL, nativeContainerType = long.class) Block left, | ||
| @BlockIndex int leftPosition, | ||
| @BlockPosition @SqlType(value = StandardTypes.REAL, nativeContainerType = long.class) Block right, | ||
| @BlockIndex int rightPosition) | ||
| { | ||
| if (left.isNull(leftPosition) != right.isNull(rightPosition)) { | ||
| return true; | ||
| } | ||
| if (left.isNull(leftPosition)) { | ||
| return false; | ||
| } | ||
| return notEqual(REAL.getLong(left, leftPosition), REAL.getLong(right, rightPosition)); | ||
| } | ||
| } | ||
| } |
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