com.whitestein.lsps.vaadin.forms.datasource

Class ValueProvider.MemoizingValueProvider

java.lang.Object

com.whitestein.lsps.vaadin.forms.datasource.ValueProvider.DelegatingValueProvider

com.whitestein.lsps.vaadin.forms.datasource.ValueProvider.MemoizingValueProvider

All Implemented Interfaces:

ValueProvider, Serializable

Enclosing interface:

ValueProvider

public static class ValueProvider.MemoizingValueProvider
extends ValueProvider.DelegatingValueProvider

A provider which caches (memoizes) pairs of input-result, as provided by the delegate, indefinitely.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.whitestein.lsps.vaadin.forms.datasource.ValueProvider

ValueProvider.AbstractValueProvider, ValueProvider.DelegatingValueProvider, ValueProvider.LocalizingValueProvider, ValueProvider.MemoizingValueProvider, ValueProvider.ToStringValueProvider, ValueProvider.ValueKeepingValueProvider

Field Summary

Fields inherited from class com.whitestein.lsps.vaadin.forms.datasource.ValueProvider.DelegatingValueProvider

delegate

Constructor Summary

Constructors

Constructor and Description
MemoizingValueProvider(ValueProvider delegate)

Method Summary

Modifier and Type	Method and Description
Object	call(Object input) Provides value for given row data object.
ValueProvider	memoize() Returns a value provider which caches (memoizes) pairs of input-result of ValueProvider.call(Object) indefinitely.
String	toString()

Methods inherited from class com.whitestein.lsps.vaadin.forms.datasource.ValueProvider.DelegatingValueProvider

getComparator, getDefinition, getReturnJavaClass, getValueType

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoizingValueProvider

public MemoizingValueProvider(ValueProvider delegate)

Method Detail

call

public Object call(Object input)

Description copied from interface: ValueProvider

Provides value for given row data object.

Specified by:

call in interface ValueProvider

Overrides:

call in class ValueProvider.DelegatingValueProvider

Parameters:

input - the input object, mostly RecordHolder, may be null.

Returns:

cell value, mostly String, may be null.

memoize

public ValueProvider memoize()

Description copied from interface: ValueProvider

Returns a value provider which caches (memoizes) pairs of input-result of ValueProvider.call(Object) indefinitely.

Specified by:

memoize in interface ValueProvider

Overrides:

memoize in class ValueProvider.DelegatingValueProvider

Returns:

a memoizing value provider, not null.

toString

public String toString()

Overrides:

toString in class ValueProvider.DelegatingValueProvider