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## org.apache.xerces.validators.schema.identity
Interface ValueStore

All Known Implementing Classes:
  XMLValidator.ValueStoreBase

public interface ValueStore

Interface for storing values associated to an identity constraint. Each value stored corresponds to a field declared for the identity constraint. One instance of an object implementing this interface is created for each identity constraint per element declaration in the instance document to store the information for this identity constraint.

Note: The component performing identity constraint collection and validation is responsible for providing an implementation of this interface. The component is also responsible for performing the necessary checks required by each type of identity constraint.

Version:
  $Id: ValueStore.java,v 1.4 2001/05/15 17:21:25 neilg Exp $
Author:
  Andy Clark, IBM

Method Summary
`void` | `addValue(Field field, IDValue value)` Adds the specified value to the value store.
`void` | `reportNilError(IdentityConstraint id)`

Method Detail

### addValue

    public void addValue(Field field,
                         IDValue value)
                  throws java.lang.Exception

  Adds the specified value to the value store.
  Parameters:
    `value` - The value to add.
    `field` - The field associated to the value. This reference is used to ensure that each field only adds a value once within a selection scope.

### reportNilError

    public void reportNilError(IdentityConstraint id)
                        throws java.lang.Exception

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