#include <coherence/util/extractor/CompositeUpdater.hpp>
Inherits Object, ValueUpdater, and PortableObject.
Public Types | ||||||||||||||||
typedef spec::Handle | Handle | |||||||||||||||
CompositeUpdater Handle definition. | ||||||||||||||||
typedef spec::View | View | |||||||||||||||
CompositeUpdater View definition. | ||||||||||||||||
typedef spec::Holder | Holder | |||||||||||||||
CompositeUpdater Holder definition. | ||||||||||||||||
Public Member Functions | ||||||||||||||||
virtual void | update (Object::Handle hTarget, Object::Holder ohValue) const | |||||||||||||||
Update the state of the passed target object using the passed value.
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virtual void | readExternal (PofReader::Handle hIn) | |||||||||||||||
virtual void | writeExternal (PofWriter::Handle hOut) const | |||||||||||||||
virtual TypedHandle < const String > | toString () const | |||||||||||||||
Output a human-readable description of this Object to the given stream. Note that when overriding this method the return type must be TypedHandle<const String> rather then String::View. These two types are assignment compatible but not equivalent and declaring the override with String::View will not be a compatible override. coherence::lang::operator<<(std::ostream, Object::View) is defined and will call into the toString method, to output Objects. If a managed String object is desired, the COH_TO_STRING macro can be used to build up a String from streamable contents and is generally how toString() will be implemented.
Object::View vKey = ... Object::View vValue = ... std::cout << vKey << " = " << vValue << std::endl; String::View vs = COH_TO_STRING(vKey << " = " << vValue); The COH_TO_STRING macro is also the most common way to implement the toString method. For example:
virtual TypedHandle<const String> Person::toString() const { return COH_TO_STRING("Name: " << f_sName << " SSN: " << f_nSSN); }
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virtual ValueExtractor::View | getExtractor () const | |||||||||||||||
Retrieve the ValueExtractor part. | ||||||||||||||||
virtual ValueUpdater::View | getUpdater () const | |||||||||||||||
Retrieve the ValueUpdator part. | ||||||||||||||||
Protected Member Functions | ||||||||||||||||
CompositeUpdater () | ||||||||||||||||
Construct an empty CompositeUpdater (necessary for the PortableObject interface). | ||||||||||||||||
CompositeUpdater (String::View vsName) | ||||||||||||||||
Construct a CompositeUpdater for a specified method name sequence. | ||||||||||||||||
CompositeUpdater (ValueExtractor::View vExtractor, ValueUpdater::View vUpdater) | ||||||||||||||||
Construct a CompositeUpdater based on the specified extractor and updater. | ||||||||||||||||
Protected Attributes | ||||||||||||||||
FinalView < ValueExtractor > | f_vExtractor | |||||||||||||||
The ValueExtractor part. | ||||||||||||||||
FinalView< ValueUpdater > | f_vUpdater | |||||||||||||||
The ValueUpdaterr part. |
CompositeUpdater | ( | String::View | vsName | ) | [protected] |
Construct a CompositeUpdater for a specified method name sequence.
For example: "getAddress. setZip" method name will indicate that the "getAddress()" method should be used to extract an Address object, which will then be used by the "setZip(String)" call.
vsName | a dot-delimited sequence of N method names which results in a CompositeUpdater that is based on an chain of (N-1) ReflectionExtractor objects and a single ReflectionUpdater. |
CompositeUpdater | ( | ValueExtractor::View | vExtractor, | |
ValueUpdater::View | vUpdater | |||
) | [protected] |
Construct a CompositeUpdater based on the specified extractor and updater.
Note: the extractor and updater here are not symmetrical in nature: the extractor is used to "drill-down" to the target object, while the updater will operate on that extracted object.
vExtractor | the ValueExtractor | |
vUpdater | the ValueUpdater |
virtual ValueExtractor::View getExtractor | ( | ) | const [virtual] |
virtual ValueUpdater::View getUpdater | ( | ) | const [virtual] |