com.foundationdb.sql.parser

Class RowCountNode

java.lang.Object

com.foundationdb.sql.parser.QueryTreeNode

com.foundationdb.sql.parser.ResultSetNode

com.foundationdb.sql.parser.FromTable

com.foundationdb.sql.parser.RowCountNode

All Implemented Interfaces:

Visitable

public final class RowCountNode
extends FromTable

The result set generated by this node (RowCountResultSet) implements the filtering of rows needed for the and the . It sits on top of the normal SELECT's top result set, but under any ScrollInsensitiveResultSet. The latter's positioning is needed for the correct functioning of and in the presence of scrollable and/or updatable result sets and CURRENT OF cursors.

Field Summary

Fields inherited from class com.foundationdb.sql.parser.FromTable

correlationName, origTableName, tableProperties

Fields inherited from class com.foundationdb.sql.parser.QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor and Description
RowCountNode()

Method Summary

Methods

Modifier and Type	Method and Description
void	copyFrom(QueryTreeNode node) Fill this node with a deep copy of the given node.
ResultSetNode	getChildResult() Return the childResult from this node.
void	init(Object childResult, Object tableProperties) Initialilzer for a SingleChildResultSetNode.
void	init(Object childResult, Object rcl, Object offset, Object fetchFirst) Initializer for a RowCountNode
void	printSubNodes(int depth) Prints the sub-nodes of this object.
String	toString() Convert this object to a String.

Methods inherited from class com.foundationdb.sql.parser.FromTable

getCorrelationName, getExposedName, getOrigTableName, getTableName, setCorrelationName, setOrigTableName

Methods inherited from class com.foundationdb.sql.parser.ResultSetNode

getResultColumns, setInsertSource, setResultColumns

Methods inherited from class com.foundationdb.sql.parser.QueryTreeNode

accept, convertDefaultNode, debugFlush, debugPrint, formatNodeString, getBeginOffset, getDebugOutput, getEndOffset, getNodeFactory, getNodeType, getNullNode, getParserContext, getStatementType, getUserData, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, makeTableName, makeTableName, nodeHeader, printLabel, setBeginOffset, setDebugOutput, setEndOffset, setNodeType, setParserContext, setUserData, stackPrint, treePrint, treePrint, treePrint

Methods inherited from class java.lang.Object

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

Constructor Detail

RowCountNode

public RowCountNode()

Method Detail

init

public void init(Object childResult,
        Object rcl,
        Object offset,
        Object fetchFirst)
          throws StandardException

Initializer for a RowCountNode

Overrides:

init in class QueryTreeNode

Throws:

StandardException

copyFrom

public void copyFrom(QueryTreeNode node)
              throws StandardException

Fill this node with a deep copy of the given node.

Throws:

StandardException

toString

public String toString()

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Overrides:

toString in class FromTable

Returns:

This object as a String

init

public void init(Object childResult,
        Object tableProperties)

Initialilzer for a SingleChildResultSetNode.

Overrides:

init in class FromTable

Parameters:

childResult - The child ResultSetNode

tableProperties - Properties list associated with the table

getChildResult

public ResultSetNode getChildResult()

Return the childResult from this node.

Returns:

ResultSetNode The childResult from this node.

printSubNodes

public 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 ResultSetNode

Parameters:

depth - The depth of this node in the tree