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java.lang.Objectorg.apache.derby.impl.sql.compile.QueryTreeNode
org.apache.derby.impl.sql.compile.ResultSetNode
org.apache.derby.impl.sql.compile.FromTable
org.apache.derby.impl.sql.compile.SingleChildResultSetNode
org.apache.derby.impl.sql.compile.OrderByNode
public class OrderByNode
An OrderByNode represents a result set for a sort operation for an order by list. It is expected to only be generated at the end of optimization, once we have determined that a sort is required.
Field Summary | |
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(package private) OrderByList |
orderByList
|
Fields inherited from class org.apache.derby.impl.sql.compile.SingleChildResultSetNode |
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childResult, hasTrulyTheBestAccessPath |
Fields inherited from class org.apache.derby.impl.sql.compile.FromTable |
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ADD_PLAN, bestAccessPath, bestCostEstimate, bestSortAvoidancePath, correlationName, corrTableName, currentAccessPath, hashKeyColumns, initialCapacity, level, LOAD_PLAN, loadFactor, maxCapacity, origTableName, REMOVE_PLAN, tableNumber, tableProperties, trulyTheBestAccessPath, userSpecifiedJoinStrategy |
Fields inherited from class org.apache.derby.impl.sql.compile.ResultSetNode |
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costEstimate, cursorTargetTable, finalCostEstimate, insertSource, optimizer, referencedTableMap, resultColumns, resultSetNumber, scratchCostEstimate, statementResultSet |
Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode |
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AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX, isPrivilegeCollectionRequired |
Constructor Summary | |
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OrderByNode()
|
Method Summary | |
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void |
generate(ActivationClassBuilder acb,
MethodBuilder mb)
generate the distinct result set operating over the source resultset. |
void |
init(java.lang.Object childResult,
java.lang.Object orderByList,
java.lang.Object tableProperties)
Initializer for a OrderByNode. |
(package private) ResultColumnDescriptor[] |
makeResultDescriptors()
|
void |
printSubNodes(int depth)
Prints the sub-nodes of this object. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.apache.derby.iapi.sql.compile.Optimizable |
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getDataDictionary, getReferencedTableMap, getResultSetNumber |
Field Detail |
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OrderByList orderByList
Constructor Detail |
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public OrderByNode()
Method Detail |
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public void init(java.lang.Object childResult, java.lang.Object orderByList, java.lang.Object tableProperties) throws StandardException
init
in class QueryTreeNode
childResult
- The child ResultSetNodeorderByList
- The order by list.tableProperties
- Properties list associated with the table
StandardException
- Thrown on errorpublic void printSubNodes(int depth)
printSubNodes
in class SingleChildResultSetNode
depth
- The depth of this node in the treeResultColumnDescriptor[] makeResultDescriptors()
makeResultDescriptors
in class ResultSetNode
public void generate(ActivationClassBuilder acb, MethodBuilder mb) throws StandardException
generate
in class QueryTreeNode
acb
- The ActivationClassBuilder for the class being builtmb
- The method for the generated code to go into
StandardException
- Thrown on error
|
Built on Thu 2010-12-23 20:49:13+0000, from revision ??? | ||||||||
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