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java.lang.Objectorg.biojava.bio.PropertyConstraint.ExactValue
public static class PropertyConstraint.ExactValue
Matches properties if they have exactly this one value.
This is like the extreme case of an Enumeration which has just one member. It is most usefull for selecting annotations with a particular property set to a particular value e.g. ID="01234".
If you want to declare that a property must have a single value In conjunction with CardinalityConstraint.ZERO_OR_ONE you could make a property that is potional but if present must have this value Use with FilterUtils.byAnnotation() to search for features with properties set to specific values
Nested Class Summary |
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Nested classes/interfaces inherited from interface org.biojava.bio.PropertyConstraint |
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PropertyConstraint.And, PropertyConstraint.ByAnnotationType, PropertyConstraint.ByClass, PropertyConstraint.Enumeration, PropertyConstraint.ExactValue, PropertyConstraint.Or |
Field Summary |
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Fields inherited from interface org.biojava.bio.PropertyConstraint |
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ANY, NONE |
Constructor Summary | |
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PropertyConstraint.ExactValue(Object value)
Get a PropertyConstraint that matches this object and all those that are equal to it (by the Object.equals() method). |
Method Summary | |
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boolean |
accept(Object obj)
accept returns true if the value fulfills the
constraint. |
Object |
getValue()
Get the value that all properties must match. |
boolean |
subConstraintOf(PropertyConstraint pc)
subConstraintOf returns true if the constraint
is a sub-constraint. |
String |
toString()
|
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public PropertyConstraint.ExactValue(Object value)
value
- the Object to match againstMethod Detail |
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public Object getValue()
public boolean accept(Object obj)
PropertyConstraint
accept
returns true if the value fulfills the
constraint.
Manually compare items with the PropertyConstraint. Node:
this will ususaly be done for you in an AnnotationType instance
Use for implementing accept() on AnnotatoinType
accept
in interface PropertyConstraint
obj
- an Object
to check.
boolean
.public boolean subConstraintOf(PropertyConstraint pc)
PropertyConstraint
subConstraintOf
returns true if the constraint
is a sub-constraint.
A pair of constraints super and sub are in a superConstraint/subConstraint relationship if every object accepted by sub is also accepted by super. To put it another way, if instanceOf was used as a set-membership indicator function over some set of objects, then the set produced by super would be a superset of that produced by sub.
It is not expected that constraints will neccesarily
maintain references to super/sub types. It will be more usual
to infer this relationship by introspecting the constraints
themselves. For example,
PropertyConstraint.ByClass
will infer
subConstraintOf by looking at the possible class of all items
matching subConstraint.
subConstraintOf
in interface PropertyConstraint
pc
- a PropertyConstraint
to check.
boolean
.public String toString()
toString
in class Object
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