Package org.apache.tools.ant.taskdefs.optional.extension

Class Specification

java.lang.Object
org.apache.tools.ant.taskdefs.optional.extension.Specification
public final class Specification extends Object

Utility class that represents either an available "Optional Package" (formerly known as "Standard Extension") as described in the manifest of a JAR file, or the requirement for such an optional package.

For more information about optional packages, see the document Optional Package Versioning in the documentation bundle for your Java2 Standard Edition package, in file guide/extensions/versioning.html.

  • Field Details

    • SPECIFICATION_TITLE

      public static final Attributes.Name SPECIFICATION_TITLE
      Manifest Attribute Name object for SPECIFICATION_TITLE.

    • SPECIFICATION_VERSION

      public static final Attributes.Name SPECIFICATION_VERSION
      Manifest Attribute Name object for SPECIFICATION_VERSION.

    • SPECIFICATION_VENDOR

      public static final Attributes.Name SPECIFICATION_VENDOR
      Manifest Attribute Name object for SPECIFICATION_VENDOR.

    • IMPLEMENTATION_TITLE

      public static final Attributes.Name IMPLEMENTATION_TITLE
      Manifest Attribute Name object for IMPLEMENTATION_TITLE.

    • IMPLEMENTATION_VERSION

      public static final Attributes.Name IMPLEMENTATION_VERSION
      Manifest Attribute Name object for IMPLEMENTATION_VERSION.

    • IMPLEMENTATION_VENDOR

      public static final Attributes.Name IMPLEMENTATION_VENDOR
      Manifest Attribute Name object for IMPLEMENTATION_VENDOR.

    • COMPATIBLE

      public static final Compatibility COMPATIBLE
      Enum indicating that extension is compatible with other Package Specification.

    • REQUIRE_SPECIFICATION_UPGRADE

      public static final Compatibility REQUIRE_SPECIFICATION_UPGRADE
      Enum indicating that extension requires an upgrade of specification to be compatible with other Package Specification.

    • REQUIRE_VENDOR_SWITCH

      public static final Compatibility REQUIRE_VENDOR_SWITCH
      Enum indicating that extension requires a vendor switch to be compatible with other Package Specification.

    • REQUIRE_IMPLEMENTATION_CHANGE

      public static final Compatibility REQUIRE_IMPLEMENTATION_CHANGE
      Enum indicating that extension requires an upgrade of implementation to be compatible with other Package Specification.

    • INCOMPATIBLE

      public static final Compatibility INCOMPATIBLE
      This enum indicates that an extension is incompatible with other Package Specification in ways other than other enums indicate. For example, the other Package Specification may have a different ID.

  • Constructor Details

    • Specification

      public Specification(String specificationTitle, String specificationVersion, String specificationVendor, String implementationTitle, String implementationVersion, String implementationVendor)
      The constructor to create Package Specification object. Note that every component is allowed to be specified but only the specificationTitle is mandatory.
      Parameters:
      specificationTitle - the name of specification.
      specificationVersion - the specification Version.
      specificationVendor - the specification Vendor.
      implementationTitle - the title of implementation.
      implementationVersion - the implementation Version.
      implementationVendor - the implementation Vendor.

    • Specification

      public Specification(String specificationTitle, String specificationVersion, String specificationVendor, String implementationTitle, String implementationVersion, String implementationVendor, String[] sections)
      The constructor to create Package Specification object. Note that every component is allowed to be specified but only the specificationTitle is mandatory.
      Parameters:
      specificationTitle - the name of specification.
      specificationVersion - the specification Version.
      specificationVendor - the specification Vendor.
      implementationTitle - the title of implementation.
      implementationVersion - the implementation Version.
      implementationVendor - the implementation Vendor.
      sections - the sections/packages that Specification applies to.

  • Method Details

    • getSpecifications

      public static Specification[] getSpecifications(Manifest manifest) throws ParseException
      Return an array of Package Specification objects. If there are no such optional packages, a zero-length array is returned.
      Parameters:
      manifest - Manifest to be parsed
      Returns:
      the Package Specifications extensions in specified manifest
      Throws:
      ParseException - if the attributes of the specifications cannot be parsed according to their expected formats.

    • getSpecificationTitle

      public String getSpecificationTitle()
      Get the title of the specification.
      Returns:
      the title of specification

    • getSpecificationVendor

      public String getSpecificationVendor()
      Get the vendor of the specification.
      Returns:
      the vendor of the specification.

    • getImplementationTitle

      public String getImplementationTitle()
      Get the title of the specification.
      Returns:
      the title of the specification.

    • getSpecificationVersion

      public DeweyDecimal getSpecificationVersion()
      Get the version of the specification.
      Returns:
      the version of the specification.

    • getImplementationVendor

      public String getImplementationVendor()
      Get the vendor of the extensions implementation.
      Returns:
      the vendor of the extensions implementation.

    • getImplementationVersion

      public String getImplementationVersion()
      Get the version of the implementation.
      Returns:
      the version of the implementation.

    • getSections

      public String[] getSections()
      Return an array containing sections to which specification applies or null if relevant to no sections.
      Returns:
      an array containing sections to which specification applies or null if relevant to no sections.

    • getCompatibilityWith

      public Compatibility getCompatibilityWith(Specification other)
      Return a Compatibility enum indicating the relationship of this Package Specification with the specified Extension.
      Parameters:
      other - the other specification
      Returns:
      the enum indicating the compatibility (or lack thereof) of specified Package Specification

    • isCompatibleWith

      public boolean isCompatibleWith(Specification other)
      Return true if the specified package is satisfied by this Specification. Otherwise, return false.
      Parameters:
      other - the specification
      Returns:
      true if the specification is compatible with this specification

    • toString

      public String toString()
      Return a String representation of this object.
      Overrides:
      toString in class Object
      Returns:
      string representation of object.