public interface CompositeData
Modifier and Type | Method and Description |
---|---|
boolean |
containsKey(String key)
Returns true if and only if this CompositeData instance contains
an item whose name is key.
|
boolean |
containsValue(Object value)
Returns true if and only if this CompositeData instance contains an item
whose value is value.
|
boolean |
equals(Object obj)
Compares the specified obj parameter with this
CompositeData instance for equality. |
Object |
get(String key)
Returns the value of the item whose name is key.
|
Object[] |
getAll(String[] keys)
Returns an array of the values of the items whose names are specified by keys, in the same order as keys.
|
CompositeType |
getCompositeType()
Returns the composite type of this composite data instance.
|
int |
hashCode()
Returns the hash code value for this
CompositeData instance. |
String |
toString()
Returns a string representation of this
CompositeData instance. |
Collection<?> |
values()
Returns an unmodifiable Collection view of the item values contained in this CompositeData instance.
|
CompositeType getCompositeType()
Object get(String key)
key
- the name of the item.IllegalArgumentException
- if key is a null or empty String.InvalidKeyException
- if key is not an existing item name for this CompositeData instance.Object[] getAll(String[] keys)
keys
- the names of the items.IllegalArgumentException
- if an element in keys is a null or empty String.InvalidKeyException
- if an element in keys is not an existing item name for this CompositeData instance.boolean containsKey(String key)
key
- the key to be tested.boolean containsValue(Object value)
value
- the value to be tested.Collection<?> values()
boolean equals(Object obj)
CompositeData
instance for equality.
Returns true if and only if all of the following statements are true:
CompositeData
interface,deepEquals
method
for arrays of object reference types or the appropriate overloading of
Arrays.equals(e1,e2)
for arrays of primitive types
This ensures that this equals method works properly for
obj parameters which are different implementations of the
CompositeData
interface, with the restrictions mentioned in the
equals
method of the java.util.Collection interface.
equals
in class Object
obj
- the object to be compared for equality with this
CompositeData
instance.true
if the specified object is equal to this
CompositeData
instance.Object.hashCode()
,
HashMap
int hashCode()
CompositeData
instance.
The hash code of a CompositeData
instance is the sum of the hash codes
of all elements of information used in equals
comparisons
(ie: its composite type and all the item values).
This ensures that t1.equals(t2)
implies that t1.hashCode()==t2.hashCode()
for any two CompositeData
instances t1
and t2
,
as required by the general contract of the method
Object.hashCode()
.
Each item value's hash code is added to the returned hash code.
If an item value is an array,
its hash code is obtained as if by calling the
deepHashCode
method
for arrays of object reference types or the appropriate overloading
of Arrays.hashCode(e)
for arrays of primitive types.
hashCode
in class Object
CompositeData
instanceObject.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)
String toString()
CompositeData
instance.
The string representation consists of the name of the implementing class, the string representation of the composite type of this instance, and the string representation of the contents (ie list the itemName=itemValue mappings).
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