Examples of ValueEncoder

com.adgear.anoa.avro.encode.ValueEncoder
Encoder implementation for serializing Avro records as MessagePack Value objects.
org.apache.tapestry.ValueEncoder
Used to convert server side values to client-side strings. This is used when generating a {@link org.apache.tapestry.EventContext} as part of a URL, or when components (such as {@link org.apache.tapestry.corelib.components.Select}) generated other client-side strings.
Often a custom implementation is needed for entity type objects, where the {@link #toClient(Object)} methodextracts a primary key, and the {@link #toValue(String)} re-acquires the corresponding entity object. @see SelectModel @see org.apache.tapestry.services.ValueEncoderSource @see PrimaryKeyEncoder
org.apache.tapestry5.ValueEncoder
A ValueEncoder is used to convert server side objects to unique client-side strings (typically IDs) and back. This mechanism is widely used in Tapestry to allow you to work more seamlessly with objects rather than manually managing the encoding and decoding process throughout your application. Tapestry uses a ValueEncoder when generating an {@link org.apache.tapestry5.EventContext} as part of a URL, and whencomponents (such as {@link org.apache.tapestry5.corelib.components.Select}) need to generate unique client-side strings to be rendered within form elements.
Tapestry can automatically generate ValueEncoders for enums as well as Collections of any object types for which a coercion can be found from a formatted String, such as primitives, primitive wrappers, Dates, Calendars, "name=value" strings, and any types for which a custom coercion has been contributed.
Custom ValueEncoder implementations will need to be supplied for entity type objects. In such cases the {@link #toClient(Object)} method typically returnsan object's database primary key, and the {@link #toValue(String)}re-acquires the corresponding entity object, perhaps by doing a database lookup by that ID.
Some optional modules, such as Tapestry's own Hibernate and JPA modules, can automatically create a ValueEncoder for each of your entity types and then configure Tapestry to use them whenever a ValueEncoder is needed for those types. If you don't use one of those modules, you can still configure Tapestry to automatically use your custom ValueEncoder implementations by having your ValueEncoder implement the {@link org.apache.tapestry5.services.ValueEncoderFactory} interface and thencontributing a ValueEncoderSource that adds your encoder, like this, in your application's module class:
```
 public static void contributeValueEncoderSource( MappedConfiguration<Class<Color>, ValueEncoderFactory<Color>> configuration) { configuration.addInstance(Color.class, ColorEncoder.class); } 
```
@see SelectModel @see org.apache.tapestry5.services.ValueEncoderSource @see org.apache.tapestry5.services.ValueEncoderFactory @see org.apache.tapestry5.annotations.PageActivationContext

Examples of com.adgear.anoa.avro.encode.ValueEncoder

   * @param recordSchema The Schema of the records returned by the given upstream Provider.
   */
  public AvroGenericToValue(Provider<GenericRecord> provider, Schema recordSchema) {
    super(provider,
          recordSchema,
          new ValueEncoder(),
          new GenericDatumTextWriter<GenericRecord>(recordSchema));
    writer.withFieldNames();
  }

View Full Code Here

Examples of com.adgear.anoa.avro.encode.ValueEncoder

public class AvroSpecificToValue<R extends IndexedRecord> extends AvroToSchemalessBase<R, Value> {


  public AvroSpecificToValue(AvroProvider<R> provider) {
    super(provider,
          provider.getAvroSchema(),
          new ValueEncoder(),
          new SpecificDatumTextWriter<R>(provider.getAvroSchema()));
    writer.withFieldNames();
  }

View Full Code Here

Examples of com.adgear.anoa.avro.encode.ValueEncoder

   * @param recordClass The class object of the records returned by the given upstream Provider.
   */
  public AvroSpecificToValue(Provider<R> provider, Class<R> recordClass) {
    super(provider,
          SpecificData.get().getSchema(recordClass),
          new ValueEncoder(),
          new SpecificDatumTextWriter<R>(recordClass));
    writer.withFieldNames();
  }

View Full Code Here

Examples of org.apache.tapestry.ValueEncoder


    public String toClient(Object value)
    {
        Defense.notNull(value, "value");


        ValueEncoder encoder = _valueEncoderSource.getValueEncoder(value.getClass());


        return encoder.toClient(value);
    }

View Full Code Here

Examples of org.apache.tapestry.ValueEncoder

public class ContextValueEncoderImplTest extends InternalBaseTestCase
{
    @Test
    public void to_client()
    {
        ValueEncoder valueEncoder = mockValueEncoder();
        ValueEncoderSource source = mockValueEncoderSource();


        Long value = 23L;
        String encoded = "twentythree";

View Full Code Here

Examples of org.apache.tapestry.ValueEncoder




    @Test
    public void to_value()
    {
        ValueEncoder valueEncoder = mockValueEncoder();
        ValueEncoderSource source = mockValueEncoderSource();


        Long value = 23L;
        String clientValue = "twentythree";

View Full Code Here

Examples of org.apache.tapestry.ValueEncoder

        if (selected == null)
            selected = newList();
        else
            selected.clear();


        ValueEncoder encoder = _encoder;


        if (InternalUtils.isNonBlank(values))
        {
            for (String value : values.split(";"))
            {
                Object objectValue = encoder.toValue(value);


                selected.add(objectValue);
            }
        }

View Full Code Here

Examples of org.apache.tapestry.ValueEncoder

        if (selected == null)
            selected = newList();
        else
            selected.clear();


        ValueEncoder encoder = _encoder;


        if (InternalUtils.isNonBlank(values))
        {
            for (String value : values.split(";"))
            {
                Object objectValue = encoder.toValue(value);


                selected.add(objectValue);
            }
        }

View Full Code Here

Examples of org.apache.tapestry5.ValueEncoder

        // Assumption: the field type is not one that's loaded by the component class loader, so it's safe
        // to convert to a hard type during class transformation.


        Class fieldType = classCache.forName(field.getTypeName());


        ValueEncoder encoder = valueEncoderSource.getValueEncoder(fieldType);


        FieldHandle handle = field.getHandle();


        String fieldName = String.format("%s.%s", field.getPlasticClass().getClassName(), field.getName());

View Full Code Here

Examples of org.apache.tapestry5.ValueEncoder

                                "The value for query parameter '%s' was blank, but a non-blank value is needed.",
                                parameterName));


                    Class parameterType = classCache.forName(parameterTypeName);


                    ValueEncoder valueEncoder = valueEncoderSource.getValueEncoder(parameterType);


                    Object value = valueEncoder.toValue(parameterValue);


                    if (parameterType.isPrimitive() && value == null)
                        throw new RuntimeException(
                                String.format(
                                        "Query parameter '%s' evaluates to null, but the event method parameter is type %s, a primitive.",

View Full Code Here

0 1 2

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.