Java Doc for Constraint.java in  » Database-DBMS » JODB » com » mobixess » jodb » soda » api » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » JODB » com.mobixess.jodb.soda.api 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


com.mobixess.jodb.soda.api.Constraint

Constraint
public interface Constraint (Code)
constraint to limit the objects returned upon .

Constraints are constructed by calling Query.constrain Query.constrain() .

Constraints can be joined with the methods Constraint.and and() and Constraint.or or() .

The methods to modify the constraint evaluation algorithm may be merged, to construct combined evaluation rules. Examples:
  • Constraint#smaller().equal() for "smaller or equal"
  • Constraint#not().like() for "not like"
  • Constraint#not().greater().equal() for "not greater or equal"




Method Summary
public  Constraintand(Constraint with)
     links two Constraints for AND evaluation.
public  Constraintcontains()
     sets the evaluation mode to containment comparison.
public  Constraintequal()
     sets the evaluation mode to ==.
public  ObjectgetObject()
     returns the Object the query graph was constrained with to create this Constraint .
public  Constraintgreater()
     sets the evaluation mode to >.
public  Constraintidentity()
     sets the evaluation mode to identity comparison.
public  Constraintlike()
     sets the evaluation mode to "like" comparison.
public  Constraintnot()
     turns on not() comparison.
public  Constraintor(Constraint with)
     links two Constraints for OR evaluation.
public  Constraintsmaller()
     sets the evaluation mode to <.



Method Detail
and
public Constraint and(Constraint with)(Code)
links two Constraints for AND evaluation.
Parameters:
  with - the other Constraint a new Constraint, that can be used for further callsto Constraint.and and() and Constraint.or or()



contains
public Constraint contains()(Code)
sets the evaluation mode to containment comparison.

Evaluation is dependant on the constrained query node:
String
the persistent object is tested to contain a substring.
arrays,
the persistent object is tested to contain all elements of the constraining object.
this Constraint to allow the chaining of method calls.



equal
public Constraint equal()(Code)
sets the evaluation mode to ==. this Constraint to allow the chaining of method calls.



getObject
public Object getObject()(Code)
returns the Object the query graph was constrained with to create this Constraint . Object the constraining object.



greater
public Constraint greater()(Code)
sets the evaluation mode to >. this Constraint to allow the chaining of method calls.



identity
public Constraint identity()(Code)
sets the evaluation mode to identity comparison. this Constraint to allow the chaining of method calls.



like
public Constraint like()(Code)
sets the evaluation mode to "like" comparison. this Constraint to allow the chaining of method calls.



not
public Constraint not()(Code)
turns on not() comparison. this Constraint to allow the chaining of method calls.



or
public Constraint or(Constraint with)(Code)
links two Constraints for OR evaluation.
Parameters:
  with - the other Constraint a new Constraint, that can be used for further callsto Constraint.and and() and Constraint.or or()



smaller
public Constraint smaller()(Code)
sets the evaluation mode to <. this Constraint to allow the chaining of method calls.



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