com.healthmarketscience.jackcess.expr

Interface Value

All Known Implementing Classes:

BaseDelayedValue, BaseNumericValue, BaseValue, BigDecimalValue, DateTimeValue, DoubleValue, LongValue, StringValue

public interface Value

Wrapper for a typed primitive value used within the expression evaluation engine. Note that the "Null" value is represented by an actual Value instance with the type of Value.Type.NULL. Also note that all the conversion methods will throw an EvalException if the conversion is not supported for the current value.

Author:

James Ahlborn

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Value.Type the types supported within the expression evaluation engine

Method Summary

Modifier and Type	Method and Description
Object	get()
BigDecimal	getAsBigDecimal(LocaleContext ctx)
boolean	getAsBoolean(LocaleContext ctx)
Value	getAsDateTimeValue(LocaleContext ctx) Since date/time values have different types, it may be more convenient to get the date/time primitive value with the appropriate type information.
Double	getAsDouble(LocaleContext ctx)
LocalDateTime	getAsLocalDateTime(LocaleContext ctx)
Integer	getAsLongInt(LocaleContext ctx)
String	getAsString(LocaleContext ctx)
Value.Type	getType()
boolean	isNull()

Method Detail

getType

Value.Type getType()

Returns:

the type of this value

get

Object get()

Returns:

the raw primitive value

isNull

boolean isNull()

Returns:

true if this value represents a "Null" value, false otherwise.

getAsBoolean

boolean getAsBoolean(LocaleContext ctx)

Returns:

this primitive value converted to a boolean

getAsString

String getAsString(LocaleContext ctx)

Returns:

this primitive value converted to a String

getAsLocalDateTime

LocalDateTime getAsLocalDateTime(LocaleContext ctx)

Returns:

this primitive value converted to a LocalDateTime

getAsDateTimeValue

Value getAsDateTimeValue(LocaleContext ctx)

Since date/time values have different types, it may be more convenient to get the date/time primitive value with the appropriate type information.

Returns:

this value converted to a date/time value

getAsLongInt

Integer getAsLongInt(LocaleContext ctx)

Returns:

this primitive value converted (rounded) to an int

getAsDouble

Double getAsDouble(LocaleContext ctx)

Returns:

this primitive value converted (rounded) to a double

getAsBigDecimal

BigDecimal getAsBigDecimal(LocaleContext ctx)

Returns:

this primitive value converted to a BigDecimal