Package org.apache.drill.exec.planner.sql.parser

Class DrillCalciteWrapperUtility

java.lang.Object

org.apache.drill.exec.planner.sql.parser.DrillCalciteWrapperUtility

public class DrillCalciteWrapperUtility
extends Object

This utility contains the static functions to manipulate DrillCalciteSqlWrapper, DrillCalciteSqlOperatorWrapper DrillCalciteSqlFunctionWrapper and DrillCalciteSqlAggFunctionWrapper.

Method Summary

Modifier and Type	Method	Description
static org.apache.calcite.sql.SqlAggFunction	extractSqlOperatorFromWrapper(org.apache.calcite.sql.SqlAggFunction sqlAggFunction)	This static method will extract the SqlAggFunction inside the given SqlAggFunction if the given SqlFunction is wrapped in DrillCalciteSqlAggFunctionWrapper and will just return the given SqlAggFunction if it is not wrapped.
static org.apache.calcite.sql.SqlFunction	extractSqlOperatorFromWrapper(org.apache.calcite.sql.SqlFunction sqlFunction)	This static method will extract the SqlFunction inside the given SqlFunction if the given SqlFunction is wrapped in DrillCalciteSqlFunctionWrapper and will just return the given SqlFunction if it is not wrapped.
static org.apache.calcite.sql.SqlOperator	extractSqlOperatorFromWrapper(org.apache.calcite.sql.SqlOperator sqlOperator)	This static method will extract the SqlOperator inside the given SqlOperator if the given SqlOperator is wrapped in DrillCalciteSqlWrapper and will just return the given SqlOperator if it is not wrapped.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

extractSqlOperatorFromWrapper

public static org.apache.calcite.sql.SqlOperator extractSqlOperatorFromWrapper(org.apache.calcite.sql.SqlOperator sqlOperator)

This static method will extract the SqlOperator inside the given SqlOperator if the given SqlOperator is wrapped in DrillCalciteSqlWrapper and will just return the given SqlOperator if it is not wrapped.

extractSqlOperatorFromWrapper

public static org.apache.calcite.sql.SqlFunction extractSqlOperatorFromWrapper(org.apache.calcite.sql.SqlFunction sqlFunction)

This static method will extract the SqlFunction inside the given SqlFunction if the given SqlFunction is wrapped in DrillCalciteSqlFunctionWrapper and will just return the given SqlFunction if it is not wrapped.

extractSqlOperatorFromWrapper

public static org.apache.calcite.sql.SqlAggFunction extractSqlOperatorFromWrapper(org.apache.calcite.sql.SqlAggFunction sqlAggFunction)

This static method will extract the SqlAggFunction inside the given SqlAggFunction if the given SqlFunction is wrapped in DrillCalciteSqlAggFunctionWrapper and will just return the given SqlAggFunction if it is not wrapped.