org.apache.metamodel.intercept

Interface Interceptor<E>

Type Parameters:

E - the type of object to intercept

All Known Subinterfaces:

DataSetInterceptor, QueryInterceptor, RowDeletionInterceptor, RowInsertionInterceptor, RowUpdationInterceptor, SchemaInterceptor, TableCreationInterceptor, TableDropInterceptor

All Known Implementing Classes:

ConvertedDataSetInterceptor, ConvertedRowInsertionInterceptor, ConvertedRowUpdationInterceptor

public interface Interceptor<E>

Defines a high-level interface for interceptors in MetaModel. An intereptor can touch, modify, enhance or do other operations on certain object types as they are passed around for execution in MetaModel. There are 5 types of concrete interceptors:

See Also:

QueryInterceptor, DataSetInterceptor, RowInsertionInterceptor, TableCreationInterceptor, SchemaInterceptor

Method Summary

Modifier and Type	Method and Description
E	intercept(E input) Interception method invoked by MetaModel when the intercepted object is being activated.

Method Detail

intercept

E intercept(E input)

Interception method invoked by MetaModel when the intercepted object is being activated.

Parameters:

input - the intercepted object

Returns:

the intercepted object, or a modification of this if the object is to be replaced by the interceptor. The returned object must not be null.