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Persistence Component: Implement type conversion logic in Snowflake f…
…or digest generation (#2849)
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38 changes: 38 additions & 0 deletions
38
...g/finos/legend/engine/persistence/components/logicalplan/values/CastFunctionAbstract.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| // Copyright 2024 Goldman Sachs | ||
| // | ||
| // 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. | ||
|
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| package org.finos.legend.engine.persistence.components.logicalplan.values; | ||
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| import org.finos.legend.engine.persistence.components.logicalplan.datasets.FieldType; | ||
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| import static org.immutables.value.Value.Immutable; | ||
| import static org.immutables.value.Value.Parameter; | ||
| import static org.immutables.value.Value.Style; | ||
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| @Immutable | ||
| @Style( | ||
| typeAbstract = "*Abstract", | ||
| typeImmutable = "*", | ||
| jdkOnly = true, | ||
| optionalAcceptNullable = true, | ||
| strictBuilder = true | ||
| ) | ||
| public interface CastFunctionAbstract extends Value | ||
| { | ||
| @Parameter(order = 0) | ||
| Value field(); | ||
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| @Parameter(order = 1) | ||
| FieldType type(); | ||
| } |
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49 changes: 49 additions & 0 deletions
49
...d/engine/persistence/components/relational/snowflake/sql/visitor/CastFunctionVisitor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| // Copyright 2024 Goldman Sachs | ||
| // | ||
| // 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. | ||
|
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| package org.finos.legend.engine.persistence.components.relational.snowflake.sql.visitor; | ||
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| import org.finos.legend.engine.persistence.components.logicalplan.LogicalPlanNode; | ||
| import org.finos.legend.engine.persistence.components.logicalplan.values.CastFunction; | ||
| import org.finos.legend.engine.persistence.components.optimizer.Optimizer; | ||
| import org.finos.legend.engine.persistence.components.physicalplan.PhysicalPlanNode; | ||
| import org.finos.legend.engine.persistence.components.relational.snowflake.sql.SnowflakeDataTypeMapping; | ||
| import org.finos.legend.engine.persistence.components.relational.sqldom.schema.DataType; | ||
| import org.finos.legend.engine.persistence.components.transformer.LogicalPlanVisitor; | ||
| import org.finos.legend.engine.persistence.components.transformer.VisitorContext; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| public class CastFunctionVisitor implements LogicalPlanVisitor<CastFunction> | ||
| { | ||
| @Override | ||
| public VisitorResult visit(PhysicalPlanNode prev, CastFunction current, VisitorContext context) | ||
| { | ||
| DataType dataType = new SnowflakeDataTypeMapping().getDataType(current.type()); | ||
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| org.finos.legend.engine.persistence.components.relational.snowflake.sqldom.schemaops.values.CastFunction castFunction = | ||
| new org.finos.legend.engine.persistence.components.relational.snowflake.sqldom.schemaops.values.CastFunction(dataType, context.quoteIdentifier()); | ||
| for (Optimizer optimizer : context.optimizers()) | ||
| { | ||
| castFunction = (org.finos.legend.engine.persistence.components.relational.snowflake.sqldom.schemaops.values.CastFunction) optimizer.optimize(castFunction); | ||
| } | ||
| prev.push(castFunction); | ||
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| List<LogicalPlanNode> logicalPlanNodeList = new ArrayList<>(); | ||
| logicalPlanNodeList.add(current.field()); | ||
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| return new VisitorResult(castFunction, logicalPlanNodeList); | ||
| } | ||
| } |
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