org.hsqldb

Class FunctionSQLInvoked

java.lang.Object

org.hsqldb.Expression

org.hsqldb.FunctionSQLInvoked

All Implemented Interfaces:

java.lang.Cloneable

public class FunctionSQLInvoked
extends Expression

Implementation of SQL-invoked user-defined function calls - PSM and JRT

Since:

1.9.0

Field Summary

Fields inherited from class org.hsqldb.Expression

BINARY, LEFT, RIGHT, TERNARY, UNARY

Method Summary

Modifier and Type	Method and Description
java.lang.String	describe(Session session, int blanks)
boolean	equals(Expression other)
java.lang.Object	getAggregatedValue(Session session, java.lang.Object currValue)
Expression	getCondition()
Result	getResult(Session session)
java.lang.String	getSQL() For use with CHECK constraints.
java.lang.Object	getValue(Session session)
boolean	hasCondition()
boolean	isDeterministic()
HsqlList	resolveColumnReferences(Session session, RangeGroup rangeGroup, int rangeCount, RangeGroup[] rangeGroups, HsqlList unresolvedSet, boolean acceptsSequences)
void	resolveTypes(Session session, Expression parent)
void	setArguments(Expression[] newNodes)
void	setCondition(Expression e)
java.lang.Object	updateAggregatingValue(Session session, java.lang.Object currValue)

Methods inherited from class org.hsqldb.Expression

checkValidCheckConstraint, duplicate, equals, getColumn, getConstantValueNoCheck, getRowValue, getSubqueries, getTable, getType, getUnkeyedColumns, hashCode, isCorrelated, isFalse, isIndexable, isTrue, materialise, resolveCheckOrGenExpression, resolveColumnReferences, setCollation, testCondition

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

setArguments

public void setArguments(Expression[] newNodes)

resolveColumnReferences

public HsqlList resolveColumnReferences(Session session,
                                        RangeGroup rangeGroup,
                                        int rangeCount,
                                        RangeGroup[] rangeGroups,
                                        HsqlList unresolvedSet,
                                        boolean acceptsSequences)

Overrides:

resolveColumnReferences in class Expression

resolveTypes

public void resolveTypes(Session session,
                         Expression parent)

Overrides:

resolveTypes in class Expression

getValue

public java.lang.Object getValue(Session session)

Overrides:

getValue in class Expression

getResult

public Result getResult(Session session)

Overrides:

getResult in class Expression

getSQL

public java.lang.String getSQL()

Description copied from class: Expression

For use with CHECK constraints. Under development. Currently supports a subset of expressions and is suitable for CHECK search conditions that refer only to the inserted/updated row. For full DDL reporting of VIEW select queries and CHECK search conditions, future improvements here are dependent upon improvements to SELECT query parsing, so that it is performed in a number of passes. An early pass should result in the query turned into an Expression tree that contains the information in the original SQL without any alterations, and with tables and columns all resolved. This Expression can then be preserved for future use. Table and column names that are not user-defined aliases should be kept as the HsqlName structures so that table or column renaming is reflected in the precompiled query.

Overrides:

getSQL in class Expression

describe

public java.lang.String describe(Session session,
                                 int blanks)

isDeterministic

public boolean isDeterministic()

equals

public boolean equals(Expression other)

Overrides:

equals in class Expression

updateAggregatingValue

public java.lang.Object updateAggregatingValue(Session session,
                                               java.lang.Object currValue)

Overrides:

updateAggregatingValue in class Expression

getAggregatedValue

public java.lang.Object getAggregatedValue(Session session,
                                           java.lang.Object currValue)

Overrides:

getAggregatedValue in class Expression

getCondition

public Expression getCondition()

Overrides:

getCondition in class Expression

hasCondition

public boolean hasCondition()

Overrides:

hasCondition in class Expression

setCondition

public void setCondition(Expression e)

Overrides:

setCondition in class Expression