Package org.sonatype.plexus.build.incremental

Class ThreadBuildContext

java.lang.Object
org.sonatype.plexus.build.incremental.ThreadBuildContext
All Implemented Interfaces:
BuildContext
public class ThreadBuildContext extends Object implements BuildContext
BuildContext implementation that delegates actual work to thread-local build context set using setThreadBuildContext(BuildContext). DefaultBuildContext is used if no thread local build context was set. Note that plexus component metadata is not generated for this implementation. Apparently, older version of plexus used by maven-filtering and likely other projects, does not honour "default" role-hint.

  • Field Details

  • Constructor Details

    • ThreadBuildContext

      public ThreadBuildContext()

  • Method Details

    • getContext

      public static BuildContext getContext()

    • setThreadBuildContext

      public static void setThreadBuildContext(BuildContext context)

    • hasDelta

      public boolean hasDelta(String relPath)
      Description copied from interface: BuildContext
      Returns true if file or folder identified by relpath has changed since last build.
      Specified by:
      hasDelta in interface BuildContext
      Parameters:
      relPath - is path relative to build context basedir

    • hasDelta

      public boolean hasDelta(File file)
      Description copied from interface: BuildContext
      Returns true if the file has changed since last build or is not under basedir.
      Specified by:
      hasDelta in interface BuildContext

    • hasDelta

      public boolean hasDelta(List relPaths)
      Description copied from interface: BuildContext
      Returns true if any file or folder identified by relpaths has changed since last build.
      Specified by:
      hasDelta in interface BuildContext
      Parameters:
      relPaths - List are paths relative to build context basedir

    • newDeleteScanner

      public org.codehaus.plexus.util.Scanner newDeleteScanner(File basedir)
      Description copied from interface: BuildContext
      Returned Scanner scans basedir for files and directories deleted since last build. Returns empty Scanner if basedir is not under this build context basedir.
      Specified by:
      newDeleteScanner in interface BuildContext

    • newFileOutputStream

      public OutputStream newFileOutputStream(File file) throws IOException
      Description copied from interface: BuildContext
      Returns new OutputStream that writes to the file. Files changed using OutputStream returned by this method do not need to be explicitly refreshed using BuildContext.refresh(File). As an optional optimisation, OutputStreams created by incremental build context will attempt to avoid writing to the file if file content has not changed.
      Specified by:
      newFileOutputStream in interface BuildContext
      Throws:
      IOException

    • newScanner

      public org.codehaus.plexus.util.Scanner newScanner(File basedir)
      Description copied from interface: BuildContext
      Convenience method, fully equal to newScanner(basedir, false)
      Specified by:
      newScanner in interface BuildContext

    • newScanner

      public org.codehaus.plexus.util.Scanner newScanner(File basedir, boolean ignoreDelta)
      Description copied from interface: BuildContext
      Returned Scanner scans files and folders under basedir. If this is an incremental build context and ignoreDelta is false, the scanner will only "see" files and folders with content changes since last build. If ignoreDelta is true, the scanner will "see" all files and folders. Please beware that ignoreDelta=false does NOT work reliably for operations that copy resources from source to target locations. Returned Scanner only scans changed source resources and it does not consider changed or deleted target resources. This results in missing or stale target resources. Starting with 0.5.0, recommended way to process resources is to use #newScanner(basedir,true) to locate all source resources and BuildContext.isUptodate(File, File) to optimized processing of uptodate target resources. Returns empty Scanner if basedir is not under this build context basedir.
      Specified by:
      newScanner in interface BuildContext

    • refresh

      public void refresh(File file)
      Description copied from interface: BuildContext
      Indicates that the file or folder content has been modified during the build.
      Specified by:
      refresh in interface BuildContext
      See Also:

    • getValue

      public Object getValue(String key)
      Description copied from interface: BuildContext
      Returns value associated with key during previous mojo execution. This method always returns null for non-incremental builds (i.e., BuildContext.isIncremental() returns false) and mojos are expected to fall back to full, non-incremental behaviour.
      Specified by:
      getValue in interface BuildContext
      See Also:

    • isIncremental

      public boolean isIncremental()
      Description copied from interface: BuildContext
      Returns true if this build context is incremental. Scanners created by BuildContext.newScanner(File) of an incremental build context will ignore files and folders that were not changed since last build. Additionally, BuildContext.newDeleteScanner(File) will scan files and directories deleted since last build.
      Specified by:
      isIncremental in interface BuildContext

    • setValue

      public void setValue(String key, Object value)
      Description copied from interface: BuildContext
      Associate specified key with specified value in the build context. Primary (and the only) purpose of this method is to allow preservation of state needed for proper incremental behaviour between consecutive executions of the same mojo needed to. For example, maven-plugin-plugin:descriptor mojo can store collection of extracted MojoDescritpor during first invocation. Then on each consecutive execution maven-plugin-plugin:descriptor will only need to extract MojoDescriptors for changed files.
      Specified by:
      setValue in interface BuildContext
      See Also:

    • addMessage

      public void addMessage(File file, int line, int column, String message, int severity, Throwable cause)
      Description copied from interface: BuildContext
      Adds a message to the build context. The message is associated with a file and a location inside that file.
      Specified by:
      addMessage in interface BuildContext
      Parameters:
      file - The file or folder with which the message is associated. Should not be null and it is recommended to be an absolute path.
      line - The line number inside the file. Use 1 (not 0) for the first line. Use 0 for unknown/unspecified.
      column - The column number inside the file. Use 1 (not 0) for the first column. Use 0 for unknown/unspecified.
      severity - The severity of the message: SEVERITY_WARNING or SEVERITY_ERROR.
      cause - A Throwable object associated with the message. Can be null.

    • removeMessages

      public void removeMessages(File file)
      Description copied from interface: BuildContext
      Removes all messages associated with a file or folder during a previous build. It does not affect the messages added during the current build.
      Specified by:
      removeMessages in interface BuildContext

    • addWarning

      public void addWarning(File file, int line, int column, String message, Throwable cause)
      Deprecated.
      Use addMessage with severity=SEVERITY_WARNING instead
      Specified by:
      addWarning in interface BuildContext

    • addError

      public void addError(File file, int line, int column, String message, Throwable cause)
      Deprecated.
      Use addMessage with severity=SEVERITY_ERROR instead
      Specified by:
      addError in interface BuildContext

    • isUptodate

      public boolean isUptodate(File target, File source)
      Description copied from interface: BuildContext
      Returns true, if the target file exists and is uptodate compared to the source file. More specifically, this method returns true when both target and source files exist, do not have changes since last incremental build and the target file was last modified later than the source file. Returns false in all other cases.
      Specified by:
      isUptodate in interface BuildContext