org.h2.expression.function

Class XMLFunction

java.lang.Object

org.h2.expression.Expression

org.h2.expression.OperationN

org.h2.expression.function.FunctionN

org.h2.expression.function.XMLFunction

All Implemented Interfaces:

ExpressionWithVariableParameters, NamedExpression, HasSQL, Typed

public final class XMLFunction
extends FunctionN

An XML function.

Field Summary

Fields

Modifier and Type	Field and Description
static int	XMLATTR XMLATTR() (non-standard).
static int	XMLCDATA XMLCDATA() (non-standard).
static int	XMLCOMMENT XMLCOMMENT() (non-standard).
static int	XMLNODE XMLNODE() (non-standard).
static int	XMLSTARTDOC XMLSTARTDOC() (non-standard).
static int	XMLTEXT XMLTEXT() (non-standard).

Fields inherited from class org.h2.expression.OperationN

args, argsCount, type

Fields inherited from class org.h2.expression.Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

Fields inherited from interface org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Constructor Summary

Constructors

Constructor and Description
XMLFunction(int function)

Method Summary

Modifier and Type	Method and Description
java.lang.String	getName() Get the name.
Value	getValue(SessionLocal session) Return the resulting value for the current row.
protected Value	getValue(SessionLocal session, Value v1, Value v2, Value v3) Returns the value of this function.
Expression	optimize(SessionLocal session) Try to optimize the expression.

Methods inherited from class org.h2.expression.function.FunctionN

getUnenclosedSQL

Methods inherited from class org.h2.expression.OperationN

addParameter, doneWithParameters, getCost, getSubexpression, getSubexpressionCount, getType, isEverything, mapColumns, optimizeArguments, setEvaluatable, updateAggregate

Methods inherited from class org.h2.expression.Expression

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2.util.HasSQL

getTraceSQL

Field Detail

XMLATTR

public static final int XMLATTR

XMLATTR() (non-standard).

See Also:

Constant Field Values

XMLCDATA

public static final int XMLCDATA

XMLCDATA() (non-standard).

See Also:

Constant Field Values

XMLCOMMENT

public static final int XMLCOMMENT

XMLCOMMENT() (non-standard).

See Also:

Constant Field Values

XMLNODE

public static final int XMLNODE

XMLNODE() (non-standard).

See Also:

Constant Field Values

XMLSTARTDOC

public static final int XMLSTARTDOC

XMLSTARTDOC() (non-standard).

See Also:

Constant Field Values

XMLTEXT

public static final int XMLTEXT

XMLTEXT() (non-standard).

See Also:

Constant Field Values

Constructor Detail

XMLFunction

public XMLFunction(int function)

Method Detail

getValue

public Value getValue(SessionLocal session)

Description copied from class: Expression

Return the resulting value for the current row.

Overrides:

getValue in class FunctionN

Parameters:

session - the session

Returns:

the result

getValue

protected Value getValue(SessionLocal session,
                         Value v1,
                         Value v2,
                         Value v3)

Description copied from class: FunctionN

Returns the value of this function.

Overrides:

getValue in class FunctionN

Parameters:

session - the session

v1 - the value of first argument, or null

v2 - the value of second argument, or null

v3 - the value of third argument, or null

Returns:

the resulting value

optimize

public Expression optimize(SessionLocal session)

Description copied from class: Expression

Try to optimize the expression.

Specified by:

optimize in class Expression

Parameters:

session - the session

Returns:

the optimized expression

getName

public java.lang.String getName()

Description copied from interface: NamedExpression

Get the name.

Returns:

the name in uppercase