forked from apache/doris-flink-connector
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
SupportsFilterPushDown and ProjectionPushDown
- Loading branch information
Showing
4 changed files
with
165 additions
and
12 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
109 changes: 109 additions & 0 deletions
109
flink-doris-connector/src/main/java/org/apache/doris/flink/table/DorisExpressionVisitor.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| // 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.flink.table; | ||
|
|
||
| import org.apache.flink.table.expressions.CallExpression; | ||
| import org.apache.flink.table.expressions.Expression; | ||
| import org.apache.flink.table.expressions.ExpressionVisitor; | ||
| import org.apache.flink.table.expressions.FieldReferenceExpression; | ||
| import org.apache.flink.table.expressions.ResolvedExpression; | ||
| import org.apache.flink.table.expressions.TypeLiteralExpression; | ||
| import org.apache.flink.table.expressions.ValueLiteralExpression; | ||
| import org.apache.flink.table.functions.BuiltInFunctionDefinitions; | ||
| import org.apache.flink.table.types.logical.LogicalTypeRoot; | ||
|
|
||
| import java.util.List; | ||
|
|
||
| public class DorisExpressionVisitor implements ExpressionVisitor<String> { | ||
|
|
||
| @Override | ||
| public String visit(CallExpression call) { | ||
| if (BuiltInFunctionDefinitions.EQUALS.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("=", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.LESS_THAN.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("<", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.LESS_THAN_OR_EQUAL.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("<=", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.GREATER_THAN.equals(call.getFunctionDefinition())) { | ||
| return combineExpression(">", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.GREATER_THAN_OR_EQUAL.equals(call.getFunctionDefinition())) { | ||
| return combineExpression(">=", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.NOT_EQUALS.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("<>", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.OR.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("OR", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.AND.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("AND", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.LIKE.equals(call.getFunctionDefinition())) { | ||
| return combineExpression("LIKE", call.getResolvedChildren()); | ||
| } | ||
| if (BuiltInFunctionDefinitions.IS_NULL.equals(call.getFunctionDefinition())) { | ||
| return combineLeftExpression("IS NULL", call.getResolvedChildren().get(0)); | ||
| } | ||
| if (BuiltInFunctionDefinitions.IS_NOT_NULL.equals(call.getFunctionDefinition())) { | ||
| return combineLeftExpression("IS NOT NULL", call.getResolvedChildren().get(0)); | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| private String combineExpression(String operator, List<ResolvedExpression> operand) { | ||
| String left = operand.get(0).accept(this); | ||
| String right = operand.get(1).accept(this); | ||
| return String.format("(%s %s %s)", left, operator, right); | ||
| } | ||
|
|
||
| private String combineLeftExpression(String operator, ResolvedExpression operand) { | ||
| String left = operand.accept(this); | ||
| return String.format("(%s %s)", left, operator); | ||
| } | ||
|
|
||
| @Override | ||
| public String visit(ValueLiteralExpression valueLiteral) { | ||
| LogicalTypeRoot typeRoot = valueLiteral.getOutputDataType().getLogicalType().getTypeRoot(); | ||
| if (typeRoot.equals(LogicalTypeRoot.TIMESTAMP_WITHOUT_TIME_ZONE) | ||
| || typeRoot.equals(LogicalTypeRoot.TIMESTAMP_WITH_LOCAL_TIME_ZONE) | ||
| || typeRoot.equals(LogicalTypeRoot.TIMESTAMP_WITH_TIME_ZONE) | ||
| || typeRoot.equals(LogicalTypeRoot.DATE)) { | ||
| return "'" + valueLiteral + "'"; | ||
| } | ||
| return valueLiteral.toString(); | ||
| } | ||
|
|
||
| @Override | ||
| public String visit(FieldReferenceExpression fieldReference) { | ||
| return fieldReference.getName(); | ||
| } | ||
|
|
||
| @Override | ||
| public String visit(TypeLiteralExpression typeLiteral) { | ||
| return typeLiteral.getOutputDataType().toString(); | ||
| } | ||
|
|
||
| @Override | ||
| public String visit(Expression expression) { | ||
| return null; | ||
| } | ||
| } |