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[cherry-pick](branch-2.1) add function regexp_extract_or_null (#39561)

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# Proposed changes

pick https://github.com/apache/doris/pull/38296
This commit is contained in:
Socrates
2024-08-21 09:14:58 +08:00
committed by GitHub
parent 8e9bc7449b
commit bb687bd69c
7 changed files with 148 additions and 6 deletions
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2
fe/fe-core/src/main/java/org/apache/doris/catalog/BuiltinScalarFunctions.java
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@ -330,6 +330,7 @@ import org.apache.doris.nereids.trees.expressions.functions.scalar.Random;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RandomBytes;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpExtract;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpExtractAll;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpExtractOrNull;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpReplace;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpReplaceOne;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Repeat;
@ -787,6 +788,7 @@ public class BuiltinScalarFunctions implements FunctionHelper {
scalar(Regexp.class, "regexp"),
scalar(RegexpExtract.class, "regexp_extract"),
scalar(RegexpExtractAll.class, "regexp_extract_all"),
scalar(RegexpExtractOrNull.class, "regexp_extract_or_null"),
scalar(RegexpReplace.class, "regexp_replace"),
scalar(RegexpReplaceOne.class, "regexp_replace_one"),
scalar(Repeat.class, "repeat"),

73
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RegexpExtractOrNull.java Normal file
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@ -0,0 +1,73 @@
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 org.apache.doris.nereids.trees.expressions.functions.scalar;
import org.apache.doris.catalog.FunctionSignature;
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.expressions.functions.AlwaysNullable;
import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
import org.apache.doris.nereids.trees.expressions.shape.TernaryExpression;
import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
import org.apache.doris.nereids.types.BigIntType;
import org.apache.doris.nereids.types.StringType;
import org.apache.doris.nereids.types.VarcharType;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import java.util.List;
/**
* ScalarFunction 'regexp_extract_or_null'. This class is generated by GenerateFunction.
*/
public class RegexpExtractOrNull extends ScalarFunction
implements TernaryExpression, ExplicitlyCastableSignature, AlwaysNullable {
public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
FunctionSignature.ret(VarcharType.SYSTEM_DEFAULT)
.args(VarcharType.SYSTEM_DEFAULT, VarcharType.SYSTEM_DEFAULT, BigIntType.INSTANCE),
FunctionSignature.ret(StringType.INSTANCE)
.args(StringType.INSTANCE, StringType.INSTANCE, BigIntType.INSTANCE)
);
/**
* constructor with 3 arguments.
*/
public RegexpExtractOrNull(Expression arg0, Expression arg1, Expression arg2) {
super("regexp_extract_or_null", arg0, arg1, arg2);
}
/**
* withChildren.
*/
@Override
public RegexpExtractOrNull withChildren(List<Expression> children) {
Preconditions.checkArgument(children.size() == 3);
return new RegexpExtractOrNull(children.get(0), children.get(1), children.get(2));
}
@Override
public List<FunctionSignature> getSignatures() {
return SIGNATURES;
}
@Override
public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) {
return visitor.visitRegexpExtractOrNull(this, context);
}
}

5
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/visitor/ScalarFunctionVisitor.java
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@ -329,6 +329,7 @@ import org.apache.doris.nereids.trees.expressions.functions.scalar.Random;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RandomBytes;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpExtract;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpExtractAll;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpExtractOrNull;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpReplace;
import org.apache.doris.nereids.trees.expressions.functions.scalar.RegexpReplaceOne;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Repeat;
@ -1669,6 +1670,10 @@ public interface ScalarFunctionVisitor<R, C> {
return visitScalarFunction(regexpExtractAll, context);
}
default R visitRegexpExtractOrNull(RegexpExtractOrNull regexpExtractOrNull, C context) {
return visitScalarFunction(regexpExtractOrNull, context);
}
default R visitRegexpReplace(RegexpReplace regexpReplace, C context) {
return visitScalarFunction(regexpReplace, context);
}