content: /*****************************************************************
   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   ****************************************************************/
  
  package org.apache.cayenne.template.parser;
  
  import java.lang.reflect.Method;
  
  import org.apache.cayenne.reflect.PropertyUtils;
  import org.apache.cayenne.template.Context;
  
  /**
   * @since 4.1
   */
  public class ASTMethod extends IdentifierNode {
  
      public ASTMethod(int id) {
          super(id);
      }
  
      /**
       * Evaluate method call to an Object
       */
      public Object evaluateAsObject(Context context, Object parentObject) {
          if(parentObject == null) {
              throw new IllegalStateException("To evaluate method node parent object should be set.");
          }
  
          try {
              // first try default property resolution
              return PropertyUtils.getProperty(parentObject, getIdentifier());
          } catch (IllegalArgumentException ex) {
              // if it fails, try direct method call
              methodsLoop:
              for(Method m : parentObject.getClass().getMethods()) {
                  if(m.getName().equals(getIdentifier())) {
                      // check count of arguments
                      if(m.getParameterTypes().length != jjtGetNumChildren()) {
                          continue;
                      }
                      int i = 0;
                      Object[] arguments = new Object[jjtGetNumChildren()];
                      for(Class<?> parameterType : m.getParameterTypes()) {
                          ASTExpression child = (ASTExpression)jjtGetChild(i);
                          try {
                              if (parameterType.isAssignableFrom(Object.class)) {
                                  arguments[i] = child.evaluateAsObject(context);
                              } else if (parameterType.isAssignableFrom(String.class)) {
                                  arguments[i] = child.evaluateAsString(context);
                              } else if (parameterType.isAssignableFrom(Boolean.class) || parameterType.isAssignableFrom(boolean.class)) {
                                  arguments[i] = child.evaluateAsBoolean(context);
                              } else if (parameterType.isAssignableFrom(Double.class) || parameterType.isAssignableFrom(double.class)) {
                                  arguments[i] = child.evaluateAsDouble(context);
                              } else if (parameterType.isAssignableFrom(Float.class) || parameterType.isAssignableFrom(float.class)) {
                                  arguments[i] = (float) child.evaluateAsDouble(context);
                              } else if (parameterType.isAssignableFrom(Long.class) || parameterType.isAssignableFrom(long.class)) {
                                  arguments[i] = child.evaluateAsLong(context);
                              } else if (parameterType.isAssignableFrom(Integer.class) || parameterType.isAssignableFrom(int.class)) {
                                  arguments[i] = (int) child.evaluateAsLong(context);
                              } else if (parameterType.isAssignableFrom(Object[].class)) {
                                  arguments[i] = child.evaluateAsObject(context);
                              } else {
                                  continue methodsLoop;
                              }
                          } catch (UnsupportedOperationException ignored) {
                              continue methodsLoop;
                          }
                          i++;
                      }
  
                      try {
                          m.setAccessible(true);
                          return m.invoke(parentObject, arguments);
                      } catch (Exception ignored) {
                          // continue
                          System.out.println("test");
                      }
                  }
              }
          }
  
          throw new IllegalArgumentException("Unable to resolve method " + getIdentifier() +
                  " with " + jjtGetNumChildren() + " args for object " + parentObject);
      }
  
      @Override
      public void evaluate(Context context) {
          throw new UnsupportedOperationException("Unable evaluate method directly, must be solved via ASTVariable");
      }
  
  }
  