# Class StreamingValidatorImpl

java.lang.Object
org.relaxng.datatype.helpers.StreamingValidatorImpl

All Implemented Interfaces:
  `DatatypeStreamingValidator`

public final class StreamingValidatorImpl extends Object implements DatatypeStreamingValidator
Dummy implementation of `DatatypeStreamingValidator`.

This implementation can be used as a quick hack when the performance of streaming validation is not important. And this implementation also shows you how to implement the DatatypeStreamingValidator interface.

Typical usage would be:

     class MyDatatype implements Datatype {
         ....
         public DatatypeStreamingValidator createStreamingValidator( ValidationContext context ) {
             return new StreamingValidatorImpl(this,context);
         }
         ....
     }

Author:
  Kohsuke KAWAGUCHI

## Constructor Summary

Constructors
Constructor
Description
`StreamingValidatorImpl(Datatype baseType, ValidationContext context)`

## Method Summary

Modifier and Type
Method
Description
`void`
`addCharacters(char[] buf, int start, int len)`
Passes an additional fragment of the literal.
`void`
`checkValid()`
Similar to the isValid method, but this method throws Exception (with possibly diagnostic information), instead of returning false.
`boolean`
`isValid()`
Tells if the accumulated literal is valid with respect to the underlying Datatype.

### Methods inherited from class java.lang.Object

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

## Constructor Details

### StreamingValidatorImpl

public StreamingValidatorImpl(Datatype baseType, ValidationContext context)

## Method Details

### addCharacters

public void addCharacters(char[] buf, int start, int len)
Description copied from interface: `DatatypeStreamingValidator`
Passes an additional fragment of the literal.

The application can call this method several times, then call the isValid method (or the checkValid method) to check the validity of the accumulated characters.

Specified by:
  `addCharacters` in interface `DatatypeStreamingValidator`

### isValid

public boolean isValid()
Description copied from interface: `DatatypeStreamingValidator`
Tells if the accumulated literal is valid with respect to the underlying Datatype.

Specified by:
  `isValid` in interface `DatatypeStreamingValidator`
Returns:
  True if it is valid. False if otherwise.

### checkValid

public void checkValid() throws DatatypeException
Description copied from interface: `DatatypeStreamingValidator`
Similar to the isValid method, but this method throws Exception (with possibly diagnostic information), instead of returning false.

Specified by:
  `checkValid` in interface `DatatypeStreamingValidator`
Throws:
  `DatatypeException` - If the callee supports the diagnosis and the accumulated literal is invalid, then this exception that possibly contains diagnosis information is thrown.