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oracle.adf.share.services
Interface DescriptorContext

All Known Implementing Classes:

DefaultDescriptorContext

public interface DescriptorContext

Method Summary

java.lang.String	getJarFileName()
java.lang.String	getJarName()
java.net.URL	getJarURL()
java.util.jar.Manifest	getManifest()
javax.naming.Context	getNamingContext()
java.lang.String	getString(java.util.Collection<java.lang.String> descriptorNames, java.lang.String suffix)
java.lang.String	getString(java.lang.String[] descriptorNames, java.lang.String suffix)
boolean	isDescriptorVisible(java.util.Collection<java.lang.String> names, boolean checkParents)
boolean	isDescriptorVisible(java.lang.String[] names, boolean checkParents) See overloaded method.
boolean	isPackageVisible(java.lang.String packageName, boolean checkParents) Scan all manifest relevant packages (including the main one) and bundles to determine if any rule causes the package to be made explicitly visible or not.
boolean	jarExists()

Method Detail

getJarURL

java.net.URL getJarURL()

Returns:

the jar URL or null if this context is not associated with a jar (i.e. the 'root' or classloader context).

jarExists

boolean jarExists()

Returns:

true if there is a jar associated, and it's know to exist.

getString

java.lang.String getString(java.util.Collection<java.lang.String> descriptorNames,
                           java.lang.String suffix)
                           throws java.io.IOException

Parameters:

descriptorNames - components of the bundle key to build

suffix - see oracle.adf.share.services.DescriptorConstants.ALL_SUFFIXES

Returns:

the first non-null matching key value in the Bundle-Classes list.

The key will likely have 2 parts:

"ADF_DataControl", "model/AppModule", and the suffix part (ex: "name")

Throws:

java.io.IOException - if jar access fails (getLastModified, getManifest, etc)

getString

java.lang.String getString(java.lang.String[] descriptorNames,
                           java.lang.String suffix)
                           throws java.io.IOException

Parameters:

descriptorNames -

suffix -

Returns:

Throws:

java.io.IOException - if jar access fails (getLastModified, getManifest, etc)

See Also:

getString(Collection<String> descriptorNames, String suffix)

getJarName

java.lang.String getJarName()
                            throws java.io.IOException

Returns:

The most appropriate display name for the jar in context. The following algorithm is used (in this order):

1. If the jar has Bundle-Classes in the main manifest attributes, they will be checked (in declaration order) for the ".name" key.
2. The main manifest "Implementation-Title" attribute is used.
3. The main manifest "Specification-Title" attribute is used.
4. The "base name" of the jar is returned (i.e. no path names).

Throws:

java.io.IOException

getJarFileName

java.lang.String getJarFileName()
                                throws java.io.IOException

Returns:

The name of the jar file excluding the path.

Throws:

java.io.IOException

isPackageVisible

boolean isPackageVisible(java.lang.String packageName,
                         boolean checkParents)
                         throws java.io.IOException

Scan all manifest relevant packages (including the main one) and bundles to determine if any rule causes the package to be made explicitly visible or not. The default is visible if no matching specifications found.

Parameters:

packageName - null or empty string for the main jar manifest attribute (and resource bundles). Otherwise, the packageName to check for "Design-Visibility" in the jar manifest. If the value has multiple elements (separated by either '/' or '.') then the following rules apply:

1. 1. If the exact package name is declared in the manifest then it's used
2. 2. If any parent (in reverse order) has a declared value then it's used

checkParents - Passing false will disable the inheritance checking described here and just check the currently requested package.

Returns:

true if there is no declaration of visibility at all for either the packageName parameter or any of it's parents. If there is an explicit declaration then that value is returned (using the rules in packageName).

Throws:

java.io.IOException

isDescriptorVisible

boolean isDescriptorVisible(java.util.Collection<java.lang.String> names,
                            boolean checkParents)
                            throws java.io.IOException

Parameters:

names -

checkParents -

Returns:

Throws:

java.io.IOException

isDescriptorVisible

boolean isDescriptorVisible(java.lang.String[] names,
                            boolean checkParents)
                            throws java.io.IOException

See overloaded method.

Parameters:

names -

checkParents -

Returns:

Throws:

java.io.IOException

getManifest

java.util.jar.Manifest getManifest()
                                   throws java.io.IOException

Returns:

the manifest of the current jar file in context. May be null if the jar has no manifest.

Throws:

java.io.IOException

getNamingContext

javax.naming.Context getNamingContext()

Returns:

the associated jndi naming context object.

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