org.apache.uima.cas

## Interface FSStringConstraint

- All Superinterfaces:
    FSConstraint, Serializable

      public interface FSStringConstraint
      extends FSConstraint

  Interface for a String constraint. A String constraint supports equality testing to a given string. After creating this constraint, use the `equals(String)` method to specify the string that the constraint uses in its testing.

  To use the constraint, invoke its `match(String)` method, passing the value to test. You can also embed this test with a path specification, using the `ConstraintFactory.embedConstraint(FeaturePath, FSConstraint)` method, and use it to test feature structures, or combine it with other tests using the `ConstraintFactory.and(FSMatchConstraint, FSMatchConstraint)` and `ConstraintFactory.or(FSMatchConstraint, FSMatchConstraint)` methods.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `equals(String s)` String value of matched FS must match input String.
    `boolean` | `match(String s)` Check if String matches defined constraints.

- - ### Method Detail

    - #### equals

          void equals(String s)

      String value of matched FS must match input String.
      Parameters:
        `s` - The string that the matched FS must equal.

    - #### match

          boolean match(String s)

      Check if String matches defined constraints.
      Parameters:
        `s` - The String to be checked.
      Returns:
        `true` iff the String satisfies the constraints.

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