com.googlecode.n_orm.storeapi

Class Constraint

java.lang.Object

com.googlecode.n_orm.storeapi.Constraint

public class Constraint
extends Object

A restriction to a SimpleStore search. In case this restriction applies to a table (as in SimpleStore.get(String, Constraint, int, java.util.Set), returned rows should have key be between getStartKey() and getEndKey(). In case this restrictions applies to a column family (as in SimpleStore.get(String, String, String, Constraint), returned columns should have key be between getStartKey() and getEndKey().

Constructor Summary

Constructors

Constructor and Description
Constraint(Class<?> clazz, Map<Field,Object> values, Field searchedKey, Object startValue, Object endValue, boolean checkKeys) Describes a search for a particular key.
Constraint(Class<?> type, Map<String,Object> values, String searchedKey, Constraint subkeySearch)
Constraint(Class<?> type, Map<String,Object> values, String field, Object startValue, Object endValue) Describes a search for a particular key.
Constraint(Map<Field,Object> values, Field searchedKey, Constraint subkeySearch)
Constraint(Map<Field,Object> values, Field searchedKey, Constraint subkeySearch, boolean checkKeys)
Constraint(Map<Field,Object> values, Field searchedKey, Object startValue, Object endValue, boolean checkKeys)
Constraint(String startKey, String endKey)

Method Summary

Modifier and Type	Method and Description
String	getEndKey() The maximal (inclusive) value for searched keys
String	getStartKey() The minimal (inclusive) value for searched keys
boolean	sastisfies(String key)
protected static Map<Field,Object>	toMapOfFields(Class<?> clazz, Map<String,Object> values)

Methods inherited from class java.lang.Object

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

Constructor Detail

Constraint

public Constraint(String startKey,
                  String endKey)

Constraint

public Constraint(Map<Field,Object> values,
                  Field searchedKey,
                  Object startValue,
                  Object endValue,
                  boolean checkKeys)

Constraint

public Constraint(Class<?> clazz,
                  Map<Field,Object> values,
                  Field searchedKey,
                  Object startValue,
                  Object endValue,
                  boolean checkKeys)

Describes a search for a particular key. To search for a range of a key of cardinality n, all values for k of cardinalities less than n must be supplied. startValue and endValue are both inclusive.

Parameters:

checkKeys - to check whether all keys with a lower category is given a value

Constraint

public Constraint(Class<?> type,
                  Map<String,Object> values,
                  String field,
                  Object startValue,
                  Object endValue)

Describes a search for a particular key. To search for a range of a key of cardinality n, all values for k of cardinalities less than n must be supplied. startValue are endValue both inclusive.

Constraint

public Constraint(Map<Field,Object> values,
                  Field searchedKey,
                  Constraint subkeySearch)

Constraint

public Constraint(Map<Field,Object> values,
                  Field searchedKey,
                  Constraint subkeySearch,
                  boolean checkKeys)

Constraint

public Constraint(Class<?> type,
                  Map<String,Object> values,
                  String searchedKey,
                  Constraint subkeySearch)

Method Detail

toMapOfFields

protected static Map<Field,Object> toMapOfFields(Class<?> clazz,
                                                 Map<String,Object> values)

getStartKey

public String getStartKey()

The minimal (inclusive) value for searched keys

getEndKey

public String getEndKey()

The maximal (inclusive) value for searched keys

sastisfies

public boolean sastisfies(String key)