org.h2.expression

Class TypedValueExpression

java.lang.Object

org.h2.expression.Expression

org.h2.expression.ValueExpression

org.h2.expression.TypedValueExpression

public class TypedValueExpression
extends ValueExpression

An expression representing a constant value with a type cast.

Field Summary

Fields inherited from class org.h2.expression.Expression

MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL

Method Summary

Methods

Modifier and Type	Method and Description
static TypedValueExpression	get(Value value, TypeInfo type) Create a new expression with the given value and type.
java.lang.StringBuilder	getSQL(java.lang.StringBuilder builder, boolean alwaysQuote) Appends the SQL statement of this expression to the specified builder.
TypeInfo	getType() Returns the data type.
static TypedValueExpression	getUnknown() Get the UNKNOWN expression.
boolean	isNullConstant() Check if this expression will always return the NULL value.

Methods inherited from class org.h2.expression.ValueExpression

createIndexConditions, get, getBoolean, getBoolean, getCost, getDefault, getExpressionColumns, getNotIfPossible, getNull, getValue, isConstant, isEverything, isValueSet, mapColumns, optimize, setEvaluatable, updateAggregate

Methods inherited from class org.h2.expression.Expression

addFilterConditions, getAlias, getBooleanValue, getColumnName, getExpressionColumns, getExpressionColumns, getNonAliasExpression, getNullable, getSchemaName, getSQL, getSubexpression, getSubexpressionCount, getTableAlias, getTableName, getUnenclosedSQL, isAutoIncrement, toString, writeExpressions, writeExpressions

Methods inherited from class java.lang.Object

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

Method Detail

get

public static TypedValueExpression get(Value value,
                       TypeInfo type)

Create a new expression with the given value and type.

Parameters:

value - the value

type - the value type

Returns:

the expression

getUnknown

public static TypedValueExpression getUnknown()

Get the UNKNOWN expression.

Returns:

the UNKNOWN expression

getType

public TypeInfo getType()

Description copied from class: Expression

Returns the data type. The data type may not be known before the optimization phase.

Overrides:

getType in class ValueExpression

Returns:

the data type

getSQL

public java.lang.StringBuilder getSQL(java.lang.StringBuilder builder,
                             boolean alwaysQuote)

Description copied from class: Expression

Appends the SQL statement of this expression to the specified builder. This may not always be the original SQL statement, specially after optimization.

Overrides:

getSQL in class ValueExpression

Parameters:

builder - string builder

alwaysQuote - quote all identifiers

Returns:

the specified string builder

isNullConstant

public boolean isNullConstant()

Description copied from class: Expression

Check if this expression will always return the NULL value.

Overrides:

isNullConstant in class ValueExpression

Returns:

if the expression is constant NULL value