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From umag...@apache.org
Subject cvs commit: jakarta-ant/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/types AntFilterReader.java FilterReaderSet.java Parameterizable.java
Date Fri, 15 Feb 2002 21:50:55 GMT
umagesh     02/02/15 13:50:55

  Added:       proposal/sandbox/filterreaders README
               proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters
                        StripLineBreaks.java
               proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/taskdefs
                        LoadFile.java
               proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/types
                        AntFilterReader.java FilterReaderSet.java
                        Parameterizable.java
  Log:
  Initial version of FilterReaderSet implementation with <loadfile> as example.
  
  Revision  Changes    Path
  1.1                  jakarta-ant/proposal/sandbox/filterreaders/README
  
  Index: README
  ===================================================================
  Ant Filter Readers
  ==================
  
  Usecase:
  ========
  * Usage of filtering has become a common pattern in 
    Ant's tasks.  Filtering is being performed one way or
    another in tasks like <copy>, <move>, <fixcrlf>,
    <loadfile>, etc.
  
  * There is no generic way to add custom filters
    currently to these tasks.  User has to either extend
    the task to add custom filter processing or add
    more attributes as needed to the task itself.
    
  * If user is provided with a pluggable filtering
    mechanism, changes to built-in tasks can be mininized,
    while at the same time providing increased flexibility
    to the user.
  
  Design:
  ======
  * FilterReaderSet is a collection of 'AntFilterReader's
  
  * Each AntFilterReader encloses the custom class representing 
    the actual java.io.FilterReader and contains configuration 
    parameters that may be used by the custom class if it
    implements the org.apache.tools.ant.types.Configurable
    interface.
    
  * Custom filter readers can be created easily even
    without using any of Ant's API - all one needs to
    do to create a custom filter is to extend 
    java.io.FilterReader.
    
  * If the extended class also implements Configurable,
    operation parameters can be made available to the
    custom filter.
  
  * Each FilterReader is piped through the other, if any, in
    the chain, in the order of declaration.
  
  Example:
  =======
  
  <loadfile srcFile="foo" property="bar">
      <filterreaderset classname="org.apache.tools.ant.filters.StripLineComments">
          <param name="cpp.comment" value="//"/>
          <param name="oracle.comment" value="REM"/>
          <param name="dbms.comment" value="--"/>
      </filterreaderset>
      <filterreaderset classname="org.apache.tools.ant.filters.StripLineBreaks"/>
  </loadfile>
  
  The above example loads the contents of the file foo,
  filters out the lines that begin with //, REM and --,
  removes line breaks and then stores the result in
  the property named bar.
  
  
  
  
  1.1                  jakarta-ant/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/StripLineBreaks.java
  
  Index: StripLineBreaks.java
  ===================================================================
  package org.apache.tools.ant.filters;
  
  import java.io.FilterReader;
  import java.io.IOException;
  import java.io.Reader;
  import java.util.Hashtable;
  
  import org.apache.tools.ant.types.Parameterizable;
  
  /**
   * Filter to flatten the stream to a single line.
   *
   * @author Steve Loughran
   * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
   */
  public final class StripLineBreaks
      extends FilterReader
      implements Parameterizable
  {
      /**
       * Linebreaks. What do to on funny IBM mainframes with odd line endings?
       */
      private static final String DEFAULT_LINE_BREAKS = "\r\n";
  
      /**
       * Linebreaks key that can be set via param element of
       * AntFilterReader
       */
      private static final String LINE_BREAKS_KEY = "linebreaks";
  
      private Hashtable parameters;
  
      /**
       * Create a new filtered reader.
       *
       * @param in  a Reader object providing the underlying stream.
       */
      public StripLineBreaks(final Reader in) {
          super(in);
      }
  
      /**
       * Strip line break characters from an array.
       *
       * @exception  IOException  If an I/O error occurs
       */
      public final int read(final char[] cbuf) throws IOException {
          int length = -1;
          if (cbuf != null) {
              length = cbuf.length;
              if (in != null) {
                  length = in.read(cbuf);
              }
              if (length != -1) {
                  String str = new String(cbuf, 0, length);
                  str = stripLineBreaks(str);
                  final char[] newcbuf = str.toCharArray();
                  System.arraycopy(newcbuf, 0, cbuf, 0, newcbuf.length);
                  for (int j = newcbuf.length; j < cbuf.length; j++) {
                      cbuf[j] = 0;
                  }
                  length = newcbuf.length;
              }
          }
          return length;
      }
  
      /**
       * strip out all line breaks from a string.
       * @param source source
       * This implementation always duplicates the string; it is nominally possible to probe
       * the string first looking for any line breaks before bothering to do a copy. But we
assume if
       * the option is requested, then line breaks are probably in the source string.
       */
      private final String stripLineBreaks(final String source) {
          final int len=source.length();
          final String userDefinedLineBreaks =
              (String) parameters.get(LINE_BREAKS_KEY);
  
          String lineBreaks = DEFAULT_LINE_BREAKS;
          if (userDefinedLineBreaks != null) {
              lineBreaks = userDefinedLineBreaks;
          }
          final StringBuffer dest=new StringBuffer(len);
          for(int i=0;i<len;++i) {
              final char ch=source.charAt(i);
              if(lineBreaks.indexOf(ch)==-1) {
                  dest.append(ch);
              }
          }
          return new String(dest);
  
      }
  
      /**
       * Set Parameters
       */
      public final void setParameters(final Hashtable parameters) {
          this.parameters = parameters;
      }
  }
  
  
  1.1                  jakarta-ant/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/taskdefs/LoadFile.java
  
  Index: LoadFile.java
  ===================================================================
  /*
   *  The Apache Software License, Version 1.1
   *
   *  Copyright (c) 2001-2002 The Apache Software Foundation.  All rights
   *  reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions
   *  are met:
   *
   *  1. Redistributions of source code must retain the above copyright
   *  notice, this list of conditions and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright
   *  notice, this list of conditions and the following disclaimer in
   *  the documentation and/or other materials provided with the
   *  distribution.
   *
   *  3. The end-user documentation included with the redistribution, if
   *  any, must include the following acknowlegement:
   *  "This product includes software developed by the
   *  Apache Software Foundation (http://www.apache.org/)."
   *  Alternately, this acknowlegement may appear in the software itself,
   *  if and wherever such third-party acknowlegements normally appear.
   *
   *  4. The names "The Jakarta Project", "Ant", and "Apache Software
   *  Foundation" must not be used to endorse or promote products derived
   *  from this software without prior written permission. For written
   *  permission, please contact apache@apache.org.
   *
   *  5. Products derived from this software may not be called "Apache"
   *  nor may "Apache" appear in their names without prior written
   *  permission of the Apache Group.
   *
   *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   *  SUCH DAMAGE.
   *  ====================================================================
   *
   *  This software consists of voluntary contributions made by many
   *  individuals on behalf of the Apache Software Foundation.  For more
   *  information on the Apache Software Foundation, please see
   *  <http://www.apache.org/>.
   */
  package org.apache.tools.ant.taskdefs;
  
  import org.apache.tools.ant.Task;
  import org.apache.tools.ant.Project;
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.types.AntFilterReader;
  import org.apache.tools.ant.types.FilterReaderSet;
  import org.apache.tools.ant.types.Parameterizable;
  
  import java.lang.reflect.Constructor;
  import java.lang.reflect.InvocationTargetException;
  import java.io.*;
  import java.util.Hashtable;
  import java.util.Vector;
  
  /**
   * Load a file into a property
   *
   * @author Steve Loughran
   * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
   * @created 10 December 2001
   */
  public class LoadFile extends Task {
  
      /**
       * source file, usually null
       */
      private File srcFile = null;
  
      /**
       * what to do when it goes pear-shaped
       */
      private boolean failOnError = true;
  
      /**
       * Encoding to use for filenames, defaults to the platform's default
       * encoding.
       */
      private String encoding = null;
  
      /**
       * name of property
       */
      private String property = null;
  
      /**
       * flag to control whether props get evaluated or not
       */
      private boolean evaluateProperties=false;
  
      /**
       * Holds filterReaderSets
       */
      private Vector filterReaderSets=new Vector();
  
      /**
       * Encoding to use for filenames, defaults to the platform's default
       * encoding. <p>
       *
       * For a list of possible values see <a href="http://java.sun.com/products/jdk/1.2/docs/guide/internat/encoding.doc.html">
       * http://java.sun.com/products/jdk/1.2/docs/guide/internat/encoding.doc.html
       * </a>.</p>
       *
       * @param encoding The new Encoding value
       */
  
      public void setEncoding(String encoding) {
          this.encoding = encoding;
      }
  
  
      /**
       * Sets the Property attribute of the LoadFile object
       *
       * @param property The new Property value
       */
      public void setProperty(String property) {
          this.property = property;
      }
  
  
      /**
       * Sets the srcfile attribute.
       *
       * @param srcFile The new SrcFile value
       */
      public void setSrcFile(File srcFile) {
          this.srcFile = srcFile;
      }
  
  
      /**
       * Sets the Failonerror attribute of the LoadFile object
       *
       * @param fail The new Failonerror value
       */
      public void setFailonerror(boolean fail) {
          failOnError = fail;
      }
  
  
      /**
       * setter to eval properties.
       * @since 1.6
       */
      public void setEvaluateProperties(boolean evaluateProperties) {
          this.evaluateProperties=evaluateProperties;
      }
  
  
      /**
       * read in a source file to a property
       *
       * @exception BuildException if something goes wrong with the build
       */
      public void execute()
          throws BuildException {
          //validation
          if (srcFile == null) {
              throw new BuildException("source file not defined");
          }
          if (property == null) {
              throw new BuildException("output property not defined");
          }
          FileInputStream fis = null;
          BufferedInputStream bis = null;
          Reader instream = null;
          log("loading "+srcFile+" into property "+property,Project.MSG_VERBOSE);
          try {
              long len = srcFile.length();
              log("file size = "+len,Project.MSG_DEBUG);
              //discard most of really big files
              if (len > Integer.MAX_VALUE) {
                  log("this file is far to big to load completely");
              }
              int size=(int) len;
              //open up the file
              fis = new FileInputStream(srcFile);
              bis = new BufferedInputStream(fis);
              if (encoding == null) {
                  instream = new InputStreamReader(bis);
              }
              else {
                  instream = new InputStreamReader(bis, encoding);
              }
  
              String text = processStream(instream, size);
  
              if(evaluateProperties) {
                  text = project.replaceProperties(text);
              }
              project.setNewProperty(property, text);
              log("loaded " + text.length() + " characters",Project.MSG_VERBOSE);
              log(property+" := "+text,Project.MSG_DEBUG);
  
          } catch (IOException ioe) {
              String message = "Unable to load file: " + ioe.toString();
              if (failOnError) {
                  throw new BuildException(message, ioe, location);
              }
              else {
                  log(message, Project.MSG_ERR);
              }
          } finally {
              try {
                  if (fis != null) {
                      fis.close();
                  }
              } catch (IOException ioex) {
              }
          }
      }
  
      /**
       * Process the input by passing it through the reader chain.
       */
      private final String processStream(Reader instream, final int size)
          throws IOException {
  
          final char[] buffer = new char[size];
          final int filterReadersCount = filterReaderSets.size();
          final Vector finalFilters = new Vector();
  
          for (int i = 0; i < filterReadersCount; i++) {
              final FilterReaderSet filterset = (FilterReaderSet) filterReaderSets.elementAt(i);
              final Vector filterReaders = filterset.getFilterReaders();
              final int readerCount = filterReaders.size();
              for (int j = 0; j < readerCount; j++) {
                  final AntFilterReader fr = (AntFilterReader) filterReaders.elementAt(j);
                  finalFilters.addElement(fr);
              }
          }
  
          final int filtersCount = finalFilters.size();
  
          if (filtersCount > 0) {
              for (int i = 0; i < filtersCount; i++) {
                  final AntFilterReader filter = (AntFilterReader) finalFilters.elementAt(i);
                  final String clazz = filter.getClassName();
                  if (clazz != null) {
                      try {
                          final Class c = Class.forName(clazz);
                          if (c != null) {
                              final Constructor[] constructors = c.getConstructors();
                              final Reader[] rdr = {instream};
                              instream = (Reader) constructors[0].newInstance(rdr);
                              if (Parameterizable.class.isAssignableFrom(c)) {
                                  final Hashtable params = filter.getParams();
                                  ((Parameterizable) instream).setParameters(params);
                              }
                          }
                      } catch (final ClassNotFoundException cnfe) {
                          throw new BuildException(cnfe);
                      } catch (final InstantiationException ie) {
                          throw new BuildException(ie);
                      } catch (final IllegalAccessException iae) {
                          throw new BuildException(iae);
                      } catch (final InvocationTargetException ite) {
                          throw new BuildException(ite);
                      }
                  }
              }
          }
  
          final int bufferLength = instream.read(buffer);
          final String text = new String(buffer, 0, bufferLength);
          return text;
      }
  
      /**
       * Add the FilterReaderSet element.
       */
      public final void addFilterReaderSet(FilterReaderSet filter) {
          filterReaderSets.addElement(filter);
      }
  
  //end class
  }
  
  
  
  1.1                  jakarta-ant/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/types/AntFilterReader.java
  
  Index: AntFilterReader.java
  ===================================================================
  /*
   *  The Apache Software License, Version 1.1
   *
   *  Copyright (c) 2002 The Apache Software Foundation.  All rights
   *  reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions
   *  are met:
   *
   *  1. Redistributions of source code must retain the above copyright
   *  notice, this list of conditions and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright
   *  notice, this list of conditions and the following disclaimer in
   *  the documentation and/or other materials provided with the
   *  distribution.
   *
   *  3. The end-user documentation included with the redistribution, if
   *  any, must include the following acknowlegement:
   *  "This product includes software developed by the
   *  Apache Software Foundation (http://www.apache.org/)."
   *  Alternately, this acknowlegement may appear in the software itself,
   *  if and wherever such third-party acknowlegements normally appear.
   *
   *  4. The names "The Jakarta Project", "Ant", and "Apache Software
   *  Foundation" must not be used to endorse or promote products derived
   *  from this software without prior written permission. For written
   *  permission, please contact apache@apache.org.
   *
   *  5. Products derived from this software may not be called "Apache"
   *  nor may "Apache" appear in their names without prior written
   *  permission of the Apache Group.
   *
   *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   *  SUCH DAMAGE.
   *  ====================================================================
   *
   *  This software consists of voluntary contributions made by many
   *  individuals on behalf of the Apache Software Foundation.  For more
   *  information on the Apache Software Foundation, please see
   *  <http://www.apache.org/>.
   */
  package org.apache.tools.ant.types;
  
  import java.io.FilterReader;
  import java.util.Hashtable;
  import java.util.Vector;
  
  import org.apache.tools.ant.types.Parameterizable;
  import org.apache.tools.ant.BuildException;
  
  /**
   * An AntFileReader is a wrapper class that encloses the classname
   * and configuration of a Configurable FilterReader.
   *
   * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
   */
  public final class AntFilterReader {
  
      private String className;
  
      private final Vector parameters = new Vector();
  
      public final void setClassName(final String className) {
          try {
              final Class c = Class.forName(className);
              if (FilterReader.class.isAssignableFrom(c)) {
                  this.className = className;
              } else {
                  throw new BuildException(className +
                      " does not extend java.io.FilterReader");
              }
          } catch (final ClassNotFoundException cnfe) {
              throw new BuildException(cnfe);
          }
      }
  
      public final String getClassName() {
          return className;
      }
  
      public final void addParam(final Parameter param) {
          parameters.addElement(param);
      }
  
      public final Hashtable getParams() {
          final int size = parameters.size();
          final Hashtable params = new Hashtable();
          for (int i = 0; i < size; i++) {
              final Parameter param = (Parameter) parameters.elementAt(i);
              final String name = param.getName();
              final String value = param.getValue();
              if (name != null && value != null) {
                  params.put(name, value);
              }
          }
          return params;
      }
  
      public static final class Parameter {
          private String name = null;
          private String value = null;
  
          public final void setName(final String name) {
              this.name = name;
          }
  
          public final void setValue(final String value) {
              this.value = value;
          }
  
          public final String getName() {
              return name;
          }
  
          public final String getValue() {
              return value;
          }
      }
  }
  
  
  
  1.1                  jakarta-ant/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/types/FilterReaderSet.java
  
  Index: FilterReaderSet.java
  ===================================================================
  /*
   *  The Apache Software License, Version 1.1
   *
   *  Copyright (c) 2002 The Apache Software Foundation.  All rights
   *  reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions
   *  are met:
   *
   *  1. Redistributions of source code must retain the above copyright
   *  notice, this list of conditions and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright
   *  notice, this list of conditions and the following disclaimer in
   *  the documentation and/or other materials provided with the
   *  distribution.
   *
   *  3. The end-user documentation included with the redistribution, if
   *  any, must include the following acknowlegement:
   *  "This product includes software developed by the
   *  Apache Software Foundation (http://www.apache.org/)."
   *  Alternately, this acknowlegement may appear in the software itself,
   *  if and wherever such third-party acknowlegements normally appear.
   *
   *  4. The names "The Jakarta Project", "Ant", and "Apache Software
   *  Foundation" must not be used to endorse or promote products derived
   *  from this software without prior written permission. For written
   *  permission, please contact apache@apache.org.
   *
   *  5. Products derived from this software may not be called "Apache"
   *  nor may "Apache" appear in their names without prior written
   *  permission of the Apache Group.
   *
   *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   *  SUCH DAMAGE.
   *  ====================================================================
   *
   *  This software consists of voluntary contributions made by many
   *  individuals on behalf of the Apache Software Foundation.  For more
   *  information on the Apache Software Foundation, please see
   *  <http://www.apache.org/>.
   */
  package org.apache.tools.ant.types;
  
  import java.util.Vector;
  
  /**
   * Set of FilterReaders
   *
   * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
   */
  public final class FilterReaderSet {
  
      private final Vector filterReaders = new Vector();
  
      public final void addFilterReader(final AntFilterReader filterReader) {
          filterReaders.addElement(filterReader);
      }
  
      public final Vector getFilterReaders() {
          return filterReaders;
      }
  }
  
  
  
  1.1                  jakarta-ant/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/types/Parameterizable.java
  
  Index: Parameterizable.java
  ===================================================================
  /*
   *  The Apache Software License, Version 1.1
   *
   *  Copyright (c) 2002 The Apache Software Foundation.  All rights
   *  reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions
   *  are met:
   *
   *  1. Redistributions of source code must retain the above copyright
   *  notice, this list of conditions and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright
   *  notice, this list of conditions and the following disclaimer in
   *  the documentation and/or other materials provided with the
   *  distribution.
   *
   *  3. The end-user documentation included with the redistribution, if
   *  any, must include the following acknowlegement:
   *  "This product includes software developed by the
   *  Apache Software Foundation (http://www.apache.org/)."
   *  Alternately, this acknowlegement may appear in the software itself,
   *  if and wherever such third-party acknowlegements normally appear.
   *
   *  4. The names "The Jakarta Project", "Ant", and "Apache Software
   *  Foundation" must not be used to endorse or promote products derived
   *  from this software without prior written permission. For written
   *  permission, please contact apache@apache.org.
   *
   *  5. Products derived from this software may not be called "Apache"
   *  nor may "Apache" appear in their names without prior written
   *  permission of the Apache Group.
   *
   *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   *  SUCH DAMAGE.
   *  ====================================================================
   *
   *  This software consists of voluntary contributions made by many
   *  individuals on behalf of the Apache Software Foundation.  For more
   *  information on the Apache Software Foundation, please see
   *  <http://www.apache.org/>.
   */
  package org.apache.tools.ant.types;
  
  import java.util.Hashtable;
  
  /**
   * Parameterizable objects take genric key value pairs.
   *
   * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
   */
  public interface Parameterizable {
      void setParameters(Hashtable parameters);
  }
  
  
  

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