Package swiss.trustbroker.util

Class PropertyUtil

java.lang.Object

swiss.trustbroker.util.PropertyUtil

public class PropertyUtil
extends Object

Java bean property utilities.

Method Summary

Modifier and Type	Method	Description
static <X> boolean	copyAttributeIfBlank(BiConsumer<X,String> setter, Function<X,String> getter, X target, X base)	Copy attribute from base to target if set in base, but not in target (blank check).
static <X, Y> boolean	copyAttributeIfMissing(BiConsumer<X,Y> setter, Function<X,Y> getter, X target, X base)	Copy attribute from base to target if set in base, but not in target (null check).
static <X, Y> boolean	copyAttributeIfRequired(BiConsumer<X,Y> setter, Function<X,Y> getter, X target, X base, Predicate<Y> copyCondition)	Copy attribute from base to target if set in base, but not in target (using copyCondition Predicate).
static <X> void	copyMissingAttributes(Set<String> propertyNames, X target, X base)	Copy all attributes from base to target if set in base, but not in target.
static <X> void	copyMissingAttributes(X target, X base)	Copy all attributes from base to target if set in base, but not in target.
static <C, T extends Number> T	evaluatePositiveNumberProperty(C instance, Function<C,T> policy, Supplier<T> defaultValue)
static <C, T> T	evaluateProperty(C instance, Function<C,T> policy, Supplier<T> defaultValue)

Methods inherited from class java.lang.Object

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

Method Details

copyMissingAttributes

public static <X> void copyMissingAttributes(X target,
 X base)

Copy all attributes from base to target if set in base, but not in target. Note: Careful if you have a Boolean with getter Boolean getProperty and setProperty(Boolean) and a convenience override boolean isProperty a property descriptor is produced for the boolean isProperty without a setter and the propagation fails! I.e. don't name the convenience accessors 'is', but leave the 'is' out.

copyMissingAttributes

public static <X> void copyMissingAttributes(Set<String> propertyNames,
 X target,
 X base)

Copy all attributes from base to target if set in base, but not in target.

copyAttributeIfBlank

public static <X> boolean copyAttributeIfBlank(BiConsumer<X,String> setter,
 Function<X,String> getter,
 X target,
 X base)

Copy attribute from base to target if set in base, but not in target (blank check).

Returns:

true if copying was done, false if a merge of the values is needed

copyAttributeIfMissing

public static <X,
Y> boolean copyAttributeIfMissing(BiConsumer<X,Y> setter,
 Function<X,Y> getter,
 X target,
 X base)

Copy attribute from base to target if set in base, but not in target (null check).

Returns:

true if copying was done, false if a merge of the values is needed

copyAttributeIfRequired

public static <X,
Y> boolean copyAttributeIfRequired(BiConsumer<X,Y> setter,
 Function<X,Y> getter,
 X target,
 X base,
 Predicate<Y> copyCondition)

Copy attribute from base to target if set in base, but not in target (using copyCondition Predicate).

Returns:

true if copying was done, false if a merge of the values is needed

evaluateProperty

public static <C,
T> T evaluateProperty(C instance,
 Function<C,T> policy,
 Supplier<T> defaultValue)

evaluatePositiveNumberProperty

public static <C,
T extends Number> T evaluatePositiveNumberProperty(C instance,
 Function<C,T> policy,
 Supplier<T> defaultValue)