stateless_function.h

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00001 /*
00002  * Copyright 2006-2008 The FLWOR Foundation.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  * 
00008  * http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #ifndef ZORBA_STATELESS_EXTERNAL_FUNCTION_H
00017 #define ZORBA_STATELESS_EXTERNAL_FUNCTION_H
00018 
00019 #include <vector>
00020 #include <zorba/api_shared_types.h> 
00021 
00022 #include <zorba/external_function_data.h>
00023 
00024 namespace zorba {
00025 
00026   class StatelessExternalFunction : public ExternalFunctionData 
00027   {
00028     public:
00029       typedef std::vector<ItemSequence*> Arguments_t;
00030 
00031     public:
00032       virtual ~StatelessExternalFunction() {}
00033 
00034       virtual String 
00035       getURI() const = 0;
00036       
00037       virtual String
00038       getLocalName() const = 0;
00039 
00040       virtual ItemSequence_t
00041       evaluate(const Arguments_t&) const = 0;
00042   };
00043 } /* namespace zorba */
00044 #endif