CompositeData (GNU libgcj 4.8.0 Documentation)

All Known Implementing Classes:

CompositeDataSupport
```
public interface CompositeData
```
Provides an interface to a composite data structure, in order to aid interoperability. The composite data structure is represented by mapping field names to values.

Since:

1.5

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`containsKey(String key)` Returns true if this `CompositeData` instance contains the specified key.
`boolean`	`containsValue(Object value)` Returns true if this `CompositeData` instance has a value equal to that supplied.
`boolean`	`equals(Object obj)` Compares the specified object with this object for equality.
`Object`	`get(String key)` Retrieves the value for the specified key.
`Object[]`	`getAll(String[] keys)` Returns the appropriate value for each key in the given array, using the same ordering.
`CompositeType`	`getCompositeType()` Returns the composite type which corresponds to this instance of `CompositeData`.
`int`	`hashCode()` Returns the hash code of this instance.
`String`	`toString()` Returns a textual representation of this instance.
`Collection<?>`	`values()` Returns a read-only collection of the values associated with this instance.

- Method Detail
  - containsKey
```
boolean containsKey(String key)
```
    Returns true if this CompositeData instance contains the specified key. This method always returns false for an input key equal to null or the empty string.
    
    Parameters:
    key - the key to find in the structure.
    
    Returns:
    true if the key exists.
  - containsValue
```
boolean containsValue(Object value)
```
    Returns true if this CompositeData instance has a value equal to that supplied.
    
    Parameters:
    value - the value to look for.
    
    Returns:
    true if the value exists.
  - equals
```
boolean equals(Object obj)
```
    Compares the specified object with this object for equality. The object is judged equivalent if it is non-null, and also an instance of CompositeData with the same name-value mappings and types. The two compared instances may be equivalent even if they represent different implementations of CompositeData.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    obj - the object to compare for equality.
    
    Returns:
    true if obj is equal to this.
    See Also:
    Object.hashCode()
  - get
```
Object get(String key)
```
    Retrieves the value for the specified key.
    
    Parameters:
    key - the key whose value should be returned.
    
    Returns:
    the matching value.
    
    Throws:
    
    IllegalArgumentException - if the key is null or the empty string.
    
    InvalidKeyException - if the key does not exist.
  - getAll
```
Object[] getAll(String[] keys)
```
    Returns the appropriate value for each key in the given array, using the same ordering.
    
    Parameters:
    keys - the keys whose values should be returned.
    
    Returns:
    the matching values.
    
    Throws:
    
    IllegalArgumentException - if one of the keys is null or the empty string.
    
    InvalidKeyException - if one of the keys does not exist.
  - getCompositeType
```
CompositeType getCompositeType()
```
    Returns the composite type which corresponds to this instance of CompositeData.
    
    Returns:
    the composite type for this instance.
  - hashCode
```
int hashCode()
```
    Returns the hash code of this instance. The hash code is computed as the sum of the hash codes of all the values plus the hash code of the composite type. As equality comparisons take place using this same information, this ensures that the property, e1.equals(e2) implies e1.hashCode() == e2.hashCode(), holds for any pair of instances, e1 and e2.
    Overrides: hashCode in class Object Returns: the hash code of this CompositeData. See Also: Object.equals(Object)
  toString String toString() Returns a textual representation of this instance. The exact format is left up to the implementation, but it should contain the name of the implementing class, the name of the type and a mapping of the form key=value for each pair of key and value. Overrides: toString in class Object Returns: a String representation of the object. See Also: Object.getClass(), Object.hashCode(), Class.getName(), Integer.toHexString(int) values Collection<?> values() Returns a read-only collection of the values associated with this instance. The values are sorted using the lexicographic ordering of the corresponding keys. Returns: the values of this instance.

Interface CompositeData

Method Summary

Method Detail

containsKey

containsValue

equals

get

getAll

getCompositeType

hashCode

toString

values