public final class CompressFunction extends Function1_2
Modifier and Type | Field and Description |
---|---|
static int |
COMPRESS
COMPRESS() (non-standard).
|
static int |
EXPAND
EXPAND() (non-standard).
|
left, right, type
AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES
ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS
Constructor and Description |
---|
CompressFunction(Expression arg1,
Expression arg2,
int function) |
Modifier and Type | Method and Description |
---|---|
java.lang.String |
getName()
Get the name.
|
Value |
getValue(SessionLocal session,
Value v1,
Value v2)
Returns the value of this function.
|
Expression |
optimize(SessionLocal session)
Try to optimize the expression.
|
getUnenclosedSQL, getValue
getCost, getSubexpression, getSubexpressionCount, getType, isEverything, mapColumns, setEvaluatable, updateAggregate
addFilterConditions, createIndexConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNotIfPossible, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, getWhenSQL, getWhenValue, isConstant, isIdentity, isNullConstant, isValueSet, isWhenConditionOperand, needParentheses, optimizeCondition, toString, writeExpressions, writeExpressions
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
getTraceSQL
public static final int COMPRESS
public static final int EXPAND
public CompressFunction(Expression arg1, Expression arg2, int function)
public Value getValue(SessionLocal session, Value v1, Value v2)
Function1_2
getValue
in class Function1_2
session
- the sessionv1
- the value of first argumentv2
- the value of second argument, or null
public Expression optimize(SessionLocal session)
Expression
optimize
in class Expression
session
- the sessionpublic java.lang.String getName()
NamedExpression