content: /*
   * $Header$
   * $Revision$
   * $Date$
   *
   * ====================================================================
   *
   * Copyright 2000-2004 bob mcwhirter & James Strachan.
   * All rights reserved.
   *
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   * 
   *   * Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 
   *   * 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.
   * 
   *   * Neither the name of the Jaxen Project nor the names of its
   *     contributors may be used to endorse or promote products derived 
   *     from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS 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 COPYRIGHT OWNER
   * OR 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 Jaxen Project and was originally
   * created by bob mcwhirter <bob@werken.com> and
   * James Strachan <jstrachan@apache.org>.  For more information on the
   * Jaxen Project, please see <http://www.jaxen.org/>.
   *
   * $Id$
   */
  
  package org.jaxen.expr;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  import org.jaxen.Context;
  import org.jaxen.Function;
  import org.jaxen.JaxenException;
  
  /**
   * @deprecated this class will become non-public in the future;
   *     use the interface instead
   */
  public class DefaultFunctionCallExpr extends DefaultExpr implements FunctionCallExpr
  {
      /**
       * 
       */
      private static final long serialVersionUID = -4747789292572193708L;
      private String prefix;
      private String functionName;
      private List parameters;
  
      public DefaultFunctionCallExpr(String prefix, String functionName)
      {
          this.prefix = prefix;
          this.functionName = functionName;
          this.parameters = new ArrayList();
      }
  
      public void addParameter(Expr parameter)
      {
          this.parameters.add(parameter);
      }
  
  
      public List getParameters()
      {
          return this.parameters;
      }
  
      public String getPrefix()
      {
          return this.prefix;
      }
  
      public String getFunctionName()
      {
          return this.functionName;
      }
  
  
      public String getText()
      {
          StringBuffer buf = new StringBuffer();
          String prefix = getPrefix();
  
          if (prefix != null &&
                  prefix.length() > 0)
          {
              buf.append(prefix);
              buf.append(":");
          }
  
          buf.append(getFunctionName());
          buf.append("(");
  
          Iterator paramIter = getParameters().iterator();
  
          while (paramIter.hasNext()) {
              Expr eachParam = (Expr) paramIter.next();
  
              buf.append(eachParam.getText());
  
              if (paramIter.hasNext())
              {
                  buf.append(", ");
              }
          }
  
          buf.append(")");
  
          return buf.toString();
      }
  
      public Expr simplify()
      {
          List paramExprs = getParameters();
          int paramSize = paramExprs.size();
  
          List newParams = new ArrayList(paramSize);
  
          for (int i = 0; i < paramSize; ++i)
          {
              Expr eachParam = (Expr) paramExprs.get(i);
  
              newParams.add(eachParam.simplify());
          }
  
          this.parameters = newParams;
  
          return this;
      }
  
  
      public String toString()
      {
          String prefix = getPrefix();
  
          if (prefix == null)
          {
              return "[(DefaultFunctionCallExpr): " + getFunctionName() + "(" + getParameters() + ") ]";
          }
  
          return "[(DefaultFunctionCallExpr): " + getPrefix() + ":" + getFunctionName() + "(" + getParameters() + ") ]";
      }
  
      public Object evaluate(Context context) throws JaxenException
      {
          String prefix = getPrefix();
          String namespaceURI = null;
          // default namespace is not used within XPath expressions
          if (prefix != null && !"".equals(prefix)) {
              namespaceURI = context.translateNamespacePrefixToUri(prefix);
          }
  
          Function func = context.getFunction(namespaceURI,
                  prefix,
                  getFunctionName());
          List paramValues = evaluateParams(context);
  
          return func.call(context, paramValues);
      }
  
      public List evaluateParams(Context context) throws JaxenException
      {
          List paramExprs = getParameters();
          int paramSize = paramExprs.size();
  
          List paramValues = new ArrayList(paramSize);
  
          for (int i = 0; i < paramSize; ++i)
          {
              Expr eachParam = (Expr) paramExprs.get(i);
  
              Object eachValue = eachParam.evaluate(context);
  
              paramValues.add(eachValue);
          }
          return paramValues;
      }
  
  }
  
  