[CJ-dev] commonjava-projects/commonjava-enterprise-services/projects/core/src/main/java/org/commonjava/j2ee/services/rewrite RewriteRule.java,NONE,1.1 LocationRewriter.java,NONE,1.1

[John C. <joh...@co...>]

Update of /cvsroot/commonjava/commonjava-projects/commonjava-enterprise-services/projects/core/src/main/java/org/commonjava/j2ee/services/rewrite
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv10019/projects/core/src/main/java/org/commonjava/j2ee/services/rewrite

Added Files:
	RewriteRule.java LocationRewriter.java 
Log Message:
modified to make core, ejb, jms, jdbc, raw-service sub-projects, and to add JNDI name rewriting to the core ServiceLocator.

--- NEW FILE: RewriteRule.java ---
/* Created on Mar 22, 2004 */
package org.commonjava.j2ee.services.rewrite;

/** Represents a rule for matching/replacing JNDI lookup names, in order to help provide a mapping
 * for logical app-internal JNDI pseudo-bindings to external environment-specific JNDI bindings.
 * 
 * @author John Casey
 * 
 * @opl.parser node="rewriteRule" root="false"
 * @opl.aux-import import="java.util.regex.Pattern"
 * @opl.child-of
 *  class="org.commonjava.j2ee.services.rewrite.LocationRewriterParser"
 *  required="true"
 *  setter="addRule(@@value)"
 */
public final class RewriteRule {
  
  private String match;
  private String replace;

  /** Create a new RewriteRule instance.
   */
  public RewriteRule() {
  }

  /** Return the regex used to determine whether this rule applies to the binding in question.
   */
  public String getMatch() {
    return match;
  }

  /** Return the replacement pattern when this rule applies to the binding in question.
   */
  public String getReplace() {
    return replace;
  }

  /** Set the regex used to determine whether this rule applies to the binding in question.
   * 
   * @opl.attribute
   *  name="match"
   *  type="string"
   *  required="true"
   *  resolve-value="true"
   *  before-children="true"
   *  validator="Pattern.compile(@@value) != null"
   */
  public void setMatch(String string) {
    match = string;
  }

  /** Set the replacement pattern when this rule applies to the binding in question.
   * 
   * @opl.attribute
   *  name="replace"
   *  type="string"
   *  required="true"
   *  resolve-value="true"
   *  before-children="true"
   */
  public void setReplace(String string) {
    replace = string;
  }
  
  /** Perform match/replace on the specified value, and return the result.
   */
  public String rewrite(String value){
    return value.replaceAll(match, replace);
  }

}

--- NEW FILE: LocationRewriter.java ---
/* Created on Mar 22, 2004 */
package org.commonjava.j2ee.services.rewrite;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.commonjava.config.snapin.ConfigSnapIn;

/** Handles rewriting JNDI bindings from in-app logical bindings (eg. "MyEJB") to 
 * the actual bindings which are found in JNDI (eg. "MyEJB-1.1"). This is a layer of 
 * indirection which allows the separation of application logic and requirements from 
 * environmental considerations, like binding collisions or component versioning.
 * 
 * @author John Casey
 * 
 * @opl.parser node="locationRewriter" root="false"
 * @opl.properties-container delegated="false"
 * @opl.aux-import import="org.commonjava.config.snapin.SnapInContainer"
 * @opl.parent-of ref="rewriteRule" minOccurs="0" maxOccurs="unbounded"
 * @opl.child-of
 *  class="org.commonjava.config.snapin.SnapInContainer"
 *  required="true"
 *  setter="addSnapIn(@@value)"
 */
public final class LocationRewriter implements ConfigSnapIn{
  
  public static final String SNAP_IN_ID = LocationRewriter.class.getName();
  
  private List rules = new ArrayList();

  /** Create a new location rewriter instance.
   */
  public LocationRewriter() {
  }

  /** Retrieve the snap-in binding ID for this config snap-in.
   * @see org.commonjava.config.snapin.ConfigSnapIn#getSnapInId()
   */
  public String getSnapInId() {
    return SNAP_IN_ID;
  }
  
  /** Add a new RewriteRule to this rewriter configuration.
   * 
   * @opl.delegate
   */
  public void addRule(RewriteRule rule){
    rules.add(rule);
  }
  
  /** Perform all match/replace rules on the specified value, and return the result.
   */
  public String rewrite(String value){
    String result = value;
    for (Iterator it = rules.iterator(); it.hasNext();) {
      RewriteRule rule = (RewriteRule)it.next();
      result = rule.rewrite(result);
    }
    
    return result;
  }

}