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Add concat and textcat SQL functions (apache#6005)
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72 changes: 72 additions & 0 deletions
72
sql/src/main/java/io/druid/sql/calcite/expression/builtin/ConcatOperatorConversion.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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 io.druid.sql.calcite.expression.builtin; | ||
|
|
||
| import io.druid.sql.calcite.expression.DruidExpression; | ||
| import io.druid.sql.calcite.expression.OperatorConversions; | ||
| import io.druid.sql.calcite.expression.SqlOperatorConversion; | ||
| import io.druid.sql.calcite.planner.Calcites; | ||
| import io.druid.sql.calcite.planner.PlannerContext; | ||
| import io.druid.sql.calcite.table.RowSignature; | ||
| import org.apache.calcite.rex.RexNode; | ||
| import org.apache.calcite.sql.SqlFunction; | ||
| import org.apache.calcite.sql.SqlFunctionCategory; | ||
| import org.apache.calcite.sql.SqlKind; | ||
| import org.apache.calcite.sql.type.OperandTypes; | ||
| import org.apache.calcite.sql.type.ReturnTypes; | ||
| import org.apache.calcite.sql.type.SqlTypeName; | ||
|
|
||
| public class ConcatOperatorConversion implements SqlOperatorConversion | ||
| { | ||
| private static final SqlFunction SQL_FUNCTION = new SqlFunction( | ||
| "CONCAT", | ||
| SqlKind.OTHER_FUNCTION, | ||
| ReturnTypes.explicit( | ||
| factory -> Calcites.createSqlType(factory, SqlTypeName.VARCHAR) | ||
| ), | ||
| null, | ||
| OperandTypes.SAME_VARIADIC, | ||
| SqlFunctionCategory.STRING | ||
| ); | ||
|
|
||
| @Override | ||
| public SqlFunction calciteOperator() | ||
| { | ||
| return SQL_FUNCTION; | ||
| } | ||
|
|
||
| @Override | ||
| public DruidExpression toDruidExpression( | ||
| final PlannerContext plannerContext, | ||
| final RowSignature rowSignature, | ||
| final RexNode rexNode | ||
| ) | ||
| { | ||
| return OperatorConversions.convertCall( | ||
| plannerContext, | ||
| rowSignature, | ||
| rexNode, | ||
| druidExpressions -> DruidExpression.of( | ||
| null, | ||
| DruidExpression.functionCall("concat", druidExpressions) | ||
| ) | ||
| ); | ||
| } | ||
| } |
66 changes: 66 additions & 0 deletions
66
sql/src/main/java/io/druid/sql/calcite/expression/builtin/TextcatOperatorConversion.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| /* | ||
| * 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 io.druid.sql.calcite.expression.builtin; | ||
|
|
||
| import io.druid.sql.calcite.expression.DruidExpression; | ||
| import io.druid.sql.calcite.expression.OperatorConversions; | ||
| import io.druid.sql.calcite.expression.SqlOperatorConversion; | ||
| import io.druid.sql.calcite.planner.PlannerContext; | ||
| import io.druid.sql.calcite.table.RowSignature; | ||
| import org.apache.calcite.rex.RexNode; | ||
| import org.apache.calcite.sql.SqlFunction; | ||
| import org.apache.calcite.sql.SqlFunctionCategory; | ||
| import org.apache.calcite.sql.type.SqlTypeFamily; | ||
| import org.apache.calcite.sql.type.SqlTypeName; | ||
|
|
||
| public class TextcatOperatorConversion implements SqlOperatorConversion | ||
| { | ||
| private static final SqlFunction SQL_FUNCTION = OperatorConversions | ||
| .operatorBuilder("textcat") | ||
| .operandTypes(SqlTypeFamily.CHARACTER, SqlTypeFamily.CHARACTER) | ||
| .requiredOperands(2) | ||
| .returnType(SqlTypeName.VARCHAR) | ||
| .functionCategory(SqlFunctionCategory.STRING) | ||
| .build(); | ||
|
|
||
| @Override | ||
| public SqlFunction calciteOperator() | ||
| { | ||
| return SQL_FUNCTION; | ||
| } | ||
|
|
||
| @Override | ||
| public DruidExpression toDruidExpression( | ||
| final PlannerContext plannerContext, | ||
| final RowSignature rowSignature, | ||
| final RexNode rexNode | ||
| ) | ||
| { | ||
| return OperatorConversions.convertCall( | ||
| plannerContext, | ||
| rowSignature, | ||
| rexNode, | ||
| druidExpressions -> DruidExpression.of( | ||
| null, | ||
| DruidExpression.functionCall("concat", druidExpressions) | ||
| ) | ||
| ); | ||
| } | ||
| } |
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