oracle.hsgbu.hdr.hl7.query

Interface Fetch

All Known Subinterfaces:

ActFetch, ActRelationshipFetch, CoreFetch, EntityFetch, IncrementalFetch, OrderedFetch, ParticipationFetch, RoleFetch

public interface Fetch

Provides methods to include or exclude attributes on a value object that is returned by a fetch method.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Implementation of the Object.equals method.
int	hashCode() Implementation of the Object.hashCode method.
boolean	isCriteriaSet() Indicates whether a criteria has been set on this fetch.
void	retrieveAll() Retrievals all attributes.
void	retrieveNone() Retrievals no attributes.
String	toString() Provides a formatted String representation of this fetch, including all included detail fetches and criteria.

Method Detail

isCriteriaSet

boolean isCriteriaSet()

Indicates whether a criteria has been set on this fetch. Always false for fetches that do not accept Criteria.

Returns:

True if criteria is set

retrieveAll

void retrieveAll()

Retrievals all attributes. This is equivalent to calling all the retrieve methods with the retrieve argument set to true.

retrieveNone

void retrieveNone()

Retrievals no attributes. This is equivalent to calling all the retrieve methods with the retrieve argument set to false.

equals

boolean equals(Object obj)

Implementation of the Object.equals method.

Fetch objects are frequently compared when determining whether the result for a navigational query is available. The equals method is used when such a comparison needs to be made.

Fetch.equals() is guaranteed to return false if any of the following conditions hold (other reasons may exist):

• Fetches are of different types
• Incremental fetch limits are different
• Sort orders are different
• Versioning, merge, or link behaviors are different
• Attached criteria trees are not equal.

Overrides:

equals in class Object

Returns:

True if fetch object to be compared is equal

hashCode

int hashCode()

Implementation of the Object.hashCode method.

This method provides an equals compatable implementation of hashing.

Overrides:

hashCode in class Object

Returns:

hashCode value for Fetch

toString

String toString()

Provides a formatted String representation of this fetch, including all included detail fetches and criteria.

The String representation of very large fetch trees can become large itself. A JVM parameter, FETCH_TOSTRING_MAX_LENGTH, limits the maximum length String that a Fetch.toString() call will produce. This parameter defaults to 1 million characters. Truncated Fetch.toString() output ends with a message noting the truncation.

Overrides:

toString in class Object

Returns:

String representaion of object