Uses of Interface
io.cdap.cdap.etl.api.relational.Relation

Packages that use Relation

Package	Description
io.cdap.cdap.etl.api.engine.sql
io.cdap.cdap.etl.api.engine.sql.request
io.cdap.cdap.etl.api.relational

Uses of Relation in io.cdap.cdap.etl.api.engine.sql

Methods in io.cdap.cdap.etl.api.engine.sql that return Relation

Modifier and Type	Method and Description
default Relation	SQLEngine.getRelation(SQLRelationDefinition relationDefinition) Prepares Relational plugin input based on provided descripton and dataset supplier.

Uses of Relation in io.cdap.cdap.etl.api.engine.sql.request

Methods in io.cdap.cdap.etl.api.engine.sql.request that return Relation

Modifier and Type	Method and Description
Relation	SQLTransformRequest.getOutputRelation()
Relation	SQLTransformDefinition.getOutputRelation()

Methods in io.cdap.cdap.etl.api.engine.sql.request that return types with arguments of type Relation

Modifier and Type	Method and Description
Map<String,Relation>	SQLTransformDefinition.getOutputRelations()

Constructors in io.cdap.cdap.etl.api.engine.sql.request with parameters of type Relation

Constructor and Description
SQLTransformDefinition(String outputDatasetName, Relation outputRelation, io.cdap.cdap.api.data.schema.Schema outputSchema, Map<String,Relation> outputRelations, Map<String,io.cdap.cdap.api.data.schema.Schema> outputSchemas)
SQLTransformRequest(Map<String,SQLDataset> inputDataSets, String outputDatasetName, Relation outputRelation, io.cdap.cdap.api.data.schema.Schema outputDataSetSchema)

Constructor parameters in io.cdap.cdap.etl.api.engine.sql.request with type arguments of type Relation

Constructor and Description
SQLTransformDefinition(String outputDatasetName, Relation outputRelation, io.cdap.cdap.api.data.schema.Schema outputSchema, Map<String,Relation> outputRelations, Map<String,io.cdap.cdap.api.data.schema.Schema> outputSchemas)

Uses of Relation in io.cdap.cdap.etl.api.relational

Classes in io.cdap.cdap.etl.api.relational that implement Relation

Modifier and Type	Class and Description
class	InvalidRelation

Methods in io.cdap.cdap.etl.api.relational that return Relation

Modifier and Type	Method and Description
Relation	InvalidRelation.deduplicate(DeduplicateAggregationDefinition aggregationDefinition)
default Relation	Relation.deduplicate(DeduplicateAggregationDefinition aggregationDefinition) Allows to perform a deduplicate operation based on an aggregation definition.
Relation	InvalidRelation.dropColumn(String s)
Relation	Relation.dropColumn(String column) Allows to drop existing column on a relation.
Relation	InvalidRelation.filter(Expression expression)
Relation	Relation.filter(Expression filter) Allows to filter relation rows based on a boolean expression
Relation	RelationalTranformContext.getInputRelation(String inputStage) Gets the relation corresponding to the given input.
Relation	InvalidRelation.groupBy(GroupByAggregationDefinition aggregationDefinition)
default Relation	Relation.groupBy(GroupByAggregationDefinition aggregationDefinition) Allows to perform a group by based on an aggregation definition.
Relation	InvalidRelation.select(Map<String,Expression> map)
Relation	Relation.select(Map<String,Expression> columns) Allows to completely replace set of column with a new one.
Relation	InvalidRelation.setColumn(String s, Expression expression)
Relation	Relation.setColumn(String column, Expression value) Allows to add or replace column for a relation.
default Relation	ExpressionFactory.setDataSetAlias(Relation dataSet, String alias) Allows to set an alias for dataset that can be used for unqualified dataset and column references.
Relation	LinearRelationalTransform.transform(RelationalTranformContext context, Relation input) This call will be done for every suitable engine until after supported tranformation is declared or there is no more engines left.
Relation	InvalidRelation.window(WindowAggregationDefinition aggregationDefinition)
default Relation	Relation.window(WindowAggregationDefinition aggregationDefinition) Allows to perform a window operation based on an aggregation definition.

Methods in io.cdap.cdap.etl.api.relational with parameters of type Relation

Modifier and Type	Method and Description
default Expression	ExpressionFactory.compile(T expression, Relation relation) Compiles expression into language-independent form taking the input relation into account.
default ExtractableExpression<T>	ExpressionFactory.getQualifiedColumnName(Relation dataSet, String column) Provides fully qualified column name to be used in expressions for a given dataset column.
default ExtractableExpression<T>	ExpressionFactory.getQualifiedDataSetName(Relation dataSet) Provides fully qualified name to be used in expressions for a given dataset.
default Relation	ExpressionFactory.setDataSetAlias(Relation dataSet, String alias) Allows to set an alias for dataset that can be used for unqualified dataset and column references.
void	RelationalTranformContext.setOutputRelation(Relation outputRelation) Sets the primary output relation for the transform.
void	RelationalTranformContext.setOutputRelation(String portName, Relation outputDataSet) Sets the output relation corresponding to an output stage.
Relation	LinearRelationalTransform.transform(RelationalTranformContext context, Relation input) This call will be done for every suitable engine until after supported tranformation is declared or there is no more engines left.