org.apache.xmlbeans

## Interface SchemaIdentityConstraint

- All Superinterfaces:
    SchemaAnnotated, SchemaComponent
  All Known Implementing Classes:
    SchemaIdentityConstraintImpl

      public interface SchemaIdentityConstraint
      extends SchemaComponent, SchemaAnnotated

  Represents an identity constraint definition.

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Interface and Description
    --- | ---
    `static class` | `SchemaIdentityConstraint.Ref` Used to allow on-demand loading of identity constraints.

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static int` | `CC_KEY` A xs:key constraint.
    `static int` | `CC_KEYREF` A xs:keyRef constraint.
    `static int` | `CC_UNIQUE` A xs:unique constraint.

    - ### Fields inherited from interface org.apache.xmlbeans.SchemaComponent

      `ANNOTATION, ATTRIBUTE, ATTRIBUTE_GROUP, ELEMENT, IDENTITY_CONSTRAINT, MODEL_GROUP, NOTATION, TYPE`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `int` | `getConstraintCategory()` Return the constraint category.
    `Object` | `getFieldPath(int index)` Return a compiled xpath object for the field.
    `String[]` | `getFields()` Return (a copy of) the xpaths for all the fields.
    `Map<String,String>` | `getNSMap()` Return a read-only copy of the namespace map.
    `SchemaIdentityConstraint` | `getReferencedKey()` Returns the key that a key ref refers to.
    `String` | `getSelector()` Return the selector xpath as a string.
    `Object` | `getSelectorPath()` Return a compiled xpath object for the selector.
    `Object` | `getUserData()` Returns user-specific information.

    - ### Methods inherited from interface org.apache.xmlbeans.SchemaComponent

      `getComponentRef, getComponentType, getName, getSourceName, getTypeSystem`

    - ### Methods inherited from interface org.apache.xmlbeans.SchemaAnnotated

      `getAnnotation`

- - ### Field Detail

    - #### CC_KEY

          static final int CC_KEY

      A xs:key constraint. See `getConstraintCategory()`.
      See Also:
        Constant Field Values

    - #### CC_KEYREF

          static final int CC_KEYREF

      A xs:keyRef constraint. See `getConstraintCategory()`.
      See Also:
        Constant Field Values

    - #### CC_UNIQUE

          static final int CC_UNIQUE

      A xs:unique constraint. See `getConstraintCategory()`.
      See Also:
        Constant Field Values

  - ### Method Detail

    - #### getSelector

          String getSelector()

      Return the selector xpath as a string.

    - #### getSelectorPath

          Object getSelectorPath()

      Return a compiled xpath object for the selector.

    - #### getFields

          String[] getFields()

      Return (a copy of) the xpaths for all the fields.

    - #### getFieldPath

          Object getFieldPath(int index)

      Return a compiled xpath object for the field.

    - #### getNSMap

          Map<String,String> getNSMap()

      Return a read-only copy of the namespace map. This is the set of prefix to URI mappings that were in scope in the schema at the point at which this constraint was declared

    - #### getConstraintCategory

          int getConstraintCategory()

      Return the constraint category. Either `CC_KEY`, `CC_KEYREF`, or `CC_UNIQUE`.

    - #### getReferencedKey

          SchemaIdentityConstraint getReferencedKey()

      Returns the key that a key ref refers to. Only valid for keyrefs.

    - #### getUserData

          Object getUserData()

      Returns user-specific information.
      See Also:
        `SchemaBookmark`