Class GroupByColumn

java.lang.Object

org.apache.derby.impl.sql.compile.QueryTreeNode

org.apache.derby.impl.sql.compile.OrderedColumn

org.apache.derby.impl.sql.compile.GroupByColumn

All Implemented Interfaces:

Visitable

class GroupByColumn
extends OrderedColumn

A GroupByColumn is a column in the GROUP BY clause.

Field Summary

Fields

Modifier and Type	Field	Description
private ValueNode	columnExpression

Fields inherited from class OrderedColumn

columnPosition, UNMATCHEDPOSITION

Fields inherited from class QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor	Description
GroupByColumn(ValueNode colRef, ContextManager cm)	Constructor.

Method Summary

Modifier and Type	Method	Description
(package private) void	acceptChildren(Visitor v)	Accept the visitor for all visitable children of this node.
(package private) void	bindExpression(FromList fromList, SubqueryList subqueryList, List<AggregateNode> aggregates)	Bind this grouping column.
(package private) ValueNode	getColumnExpression()
(package private) String	getColumnName()	Get the name of this column
(package private) void	printSubNodes(int depth)	Prints the sub-nodes of this object.
(package private) void	setColumnExpression(ValueNode cexpr)

Methods inherited from class OrderedColumn

getColumnPosition, isAscending, isNullsOrderedLow, setColumnPosition, toString

Methods inherited from class QueryTreeNode

accept, addTag, addUDTUsagePriv, addUDTUsagePriv, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, copyTagsFrom, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, generate, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContext, getContextManager, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getLongProperty, getNullNode, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, getUDTDesc, isAtomic, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

Methods inherited from class Object

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

Field Details

columnExpression

private ValueNode columnExpression

Constructor Details

GroupByColumn

GroupByColumn(ValueNode colRef,
 ContextManager cm)

Constructor.

Parameters:

colRef - The ColumnReference for the grouping column

cm - The context manager

Method Details

printSubNodes

void printSubNodes(int depth)

Prints the sub-nodes of this object. See QueryTreeNode.java for how tree printing is supposed to work.

Overrides:

printSubNodes in class QueryTreeNode

Parameters:

depth - The depth of this node in the tree

getColumnName

String getColumnName()

Get the name of this column

Returns:

The name of this column

bindExpression

void bindExpression(FromList fromList,
 SubqueryList subqueryList,
 List<AggregateNode> aggregates)
             throws StandardException

Bind this grouping column.

Parameters:

fromList - The FROM list to use for binding

subqueryList - The SubqueryList we are building as we hit SubqueryNodes.

aggregates - The aggregate list we build as we hit AggregateNodes.

Throws:

StandardException - Thrown on error

getColumnExpression

ValueNode getColumnExpression()

setColumnExpression

void setColumnExpression(ValueNode cexpr)

acceptChildren

void acceptChildren(Visitor v)
             throws StandardException

Accept the visitor for all visitable children of this node.

Overrides:

acceptChildren in class QueryTreeNode

Parameters:

v - the visitor

Throws:

StandardException - on error