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/* (C) 2008 The Measurement Factory */
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#ifndef ECAP__ADAPTER_XACTION_H
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#define ECAP__ADAPTER_XACTION_H
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#include <libecap/common/call.h>
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#include <libecap/common/area.h>
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#include <libecap/common/options.h>
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// adapter transaction is responsible for adapting a single message
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// it is created by adapter::Service::makeXaction and destroyed by
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// the host either before calling start() or after calling stop()
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class Xaction: public Callable, public Options {
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virtual void start() = 0;
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virtual void stop() = 0;
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// adapted body transmission control
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virtual void abDiscard() = 0; // host will not look at ab at all
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virtual void abMake() = 0; // host may look at ab
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virtual void abMakeMore() = 0; // host must have more ab
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virtual void abStopMaking() = 0; // host no longer needs ab
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virtual void abPause() {} // ignored by default
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virtual void abResume() {} // ignored iff abPause is
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// adapted body content extraction and consumption
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virtual Area abContent(size_type offset, size_type size) = 0;
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virtual void abContentShift(size_type size) = 0; // first size bytes
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// virgin body state notification
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virtual void noteVbContentDone(bool atEnd) = 0; // successful or not
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virtual void noteVbContentAvailable() = 0;
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} // namespace adapter
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} // namespace libecap
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src/libecap/adapter/xaction.h
