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[feature](function) support new function replace_empty (#36283) (#36656)

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#36283
This commit is contained in:
Mingyu Chen
2024-06-21 16:46:22 +08:00
committed by GitHub
parent c8f2a3f952
commit 0cff539810
8 changed files with 256 additions and 100 deletions
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2
fe/fe-core/src/main/java/org/apache/doris/catalog/BuiltinScalarFunctions.java
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@ -329,6 +329,7 @@ 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;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Replace;
import org.apache.doris.nereids.trees.expressions.functions.scalar.ReplaceEmpty;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Reverse;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Right;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Round;
@ -787,6 +788,7 @@ public class BuiltinScalarFunctions implements FunctionHelper {
scalar(RegexpReplaceOne.class, "regexp_replace_one"),
scalar(Repeat.class, "repeat"),
scalar(Replace.class, "replace"),
scalar(ReplaceEmpty.class, "replace_empty"),
scalar(Reverse.class, "reverse"),
scalar(Right.class, "right"),
scalar(Round.class, "round"),

72
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/ReplaceEmpty.java Normal file
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@ -0,0 +1,72 @@
// 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.ExplicitlyCastableSignature;
import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
import org.apache.doris.nereids.trees.expressions.shape.TernaryExpression;
import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
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 'replace_empty'.
*/
public class ReplaceEmpty extends ScalarFunction
implements TernaryExpression, ExplicitlyCastableSignature, PropagateNullable {
public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
FunctionSignature.ret(VarcharType.SYSTEM_DEFAULT)
.args(VarcharType.SYSTEM_DEFAULT, VarcharType.SYSTEM_DEFAULT, VarcharType.SYSTEM_DEFAULT),
FunctionSignature.ret(StringType.INSTANCE)
.args(StringType.INSTANCE, StringType.INSTANCE, StringType.INSTANCE)
);
/**
* constructor with 3 arguments.
*/
public ReplaceEmpty(Expression arg0, Expression arg1, Expression arg2) {
super("replace_empty", arg0, arg1, arg2);
}
/**
* withChildren.
*/
@Override
public ReplaceEmpty withChildren(List<Expression> children) {
Preconditions.checkArgument(children.size() == 3);
return new ReplaceEmpty(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.visitReplaceEmpty(this, context);
}
}

5
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/visitor/ScalarFunctionVisitor.java
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@ -328,6 +328,7 @@ 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;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Replace;
import org.apache.doris.nereids.trees.expressions.functions.scalar.ReplaceEmpty;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Reverse;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Right;
import org.apache.doris.nereids.trees.expressions.functions.scalar.Round;
@ -1687,6 +1688,10 @@ public interface ScalarFunctionVisitor<R, C> {
return visitScalarFunction(replace, context);
}
default R visitReplaceEmpty(ReplaceEmpty replaceEmpty, C context) {
return visitScalarFunction(replaceEmpty, context);
}
default R visitReverse(Reverse reverse, C context) {
return visitScalarFunction(reverse, context);
}