Package org.apache.maven.model.building
Class DefaultModelProcessor
java.lang.Object
org.apache.maven.model.building.DefaultModelProcessor
- All Implemented Interfaces:
ModelProcessor
,ModelReader
,ModelLocator
@Named("core-default")
@Singleton
@Typed(ModelProcessor.class)
public class DefaultModelProcessor
extends Object
implements ModelProcessor
Note: uses @Typed to limit the types it is available for injection to just ModelProcessor.
This is because the ModelProcessor interface extends ModelLocator and ModelReader. If we
made this component available under all its interfaces then it could end up being injected
into itself leading to a stack overflow.
A side effect of using @Typed is that it translates to explicit bindings in the container.
So instead of binding the component under a 'wildcard' key it is now bound with an explicit
key. Since this is a default component this will be a plain binding of ModelProcessor to
this implementation type, ie. no hint/name.
This leads to a second side effect in that any @Inject request for just ModelProcessor in
the same injector is immediately matched to this explicit binding, which means extensions
cannot override this binding. This is because the lookup is always short-circuited in this
specific situation (plain @Inject request, and plain explicit binding for the same type.)
The simplest solution is to use a custom @Named here so it isn't bound under the plain key.
This is only necessary for default components using @Typed that want to support overriding.
As a non-default component this now gets a negative priority relative to other implementations
of the same interface. Since we want to allow overriding this doesn't matter in this case.
(if it did we could add @Priority of 0 to match the priority given to default components.)
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Field Summary
Fields inherited from interface org.apache.maven.model.building.ModelProcessor
SOURCE
Fields inherited from interface org.apache.maven.model.io.ModelReader
INPUT_SOURCE, IS_STRICT, ROOT_DIRECTORY
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Constructor Summary
ConstructorDescriptionDefaultModelProcessor
(Collection<ModelParser> modelParsers, ModelLocator modelLocator, ModelReader modelReader) -
Method Summary
Modifier and TypeMethodDescriptionlocateExistingPom
(File projectDirectory) Returns the file containing the pom or null if a pom can not be found at the given file or in the given directory.locateExistingPom
(Path projectDirectory) Locates the POM file within the specified project directory.Reads the model from the specified file.read
(InputStream input, Map<String, ?> options) Reads the model from the specified byte stream.Reads the model from the specified character reader.protected org.apache.maven.api.model.Model
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Constructor Details
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DefaultModelProcessor
@Inject public DefaultModelProcessor(Collection<ModelParser> modelParsers, ModelLocator modelLocator, ModelReader modelReader)
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Method Details
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locatePom
Description copied from interface:ModelLocator
Locates the POM file within the specified project directory. In case the given project directory does not exist or does not contain a POM file, the return value indicates the expected path to the POM file. Subdirectories of the project directory will not be considered when locating the POM file. The return value will be an absolute path if the project directory is given as an absolute path.- Specified by:
locatePom
in interfaceModelLocator
- Parameters:
projectDirectory
- The (possibly non-existent) base directory to locate the POM file in, must not benull
.- Returns:
- The path to the (possibly non-existent) POM file, never
null
.
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locatePom
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locateExistingPom
Description copied from interface:ModelLocator
Returns the file containing the pom or null if a pom can not be found at the given file or in the given directory.- Specified by:
locateExistingPom
in interfaceModelLocator
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locateExistingPom
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read
protected org.apache.maven.api.model.Model read(Path pomFile, InputStream input, Reader reader, Map<String, ?> options) throws IOException- Throws:
IOException
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read
Description copied from interface:ModelReader
Reads the model from the specified file.- Specified by:
read
in interfaceModelReader
- Parameters:
file
- The file to deserialize the model from, must not benull
.options
- The options to use for deserialization, may benull
to use the default values.- Returns:
- The deserialized model, never
null
. - Throws:
IOException
- If the model could not be deserialized.ModelParseException
- If the input format could not be parsed.
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read
Description copied from interface:ModelReader
Reads the model from the specified byte stream. The stream will be automatically closed before the method returns.- Specified by:
read
in interfaceModelReader
- Parameters:
input
- The stream to deserialize the model from, must not benull
.options
- The options to use for deserialization, may benull
to use the default values.- Returns:
- The deserialized model, never
null
. - Throws:
IOException
- If the model could not be deserialized.ModelParseException
- If the input format could not be parsed.
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read
Description copied from interface:ModelReader
Reads the model from the specified character reader. The reader will be automatically closed before the method returns.- Specified by:
read
in interfaceModelReader
- Parameters:
reader
- The reader to deserialize the model from, must not benull
.options
- The options to use for deserialization, may benull
to use the default values.- Returns:
- The deserialized model, never
null
. - Throws:
IOException
- If the model could not be deserialized.ModelParseException
- If the input format could not be parsed.
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