JNDIResourceInspection.java

/*
 * Copyright 2003-2013 Dave Griffith, Bas Leijdekkers
 *
 * Licensed 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
 *
 * http://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 com.siyeh.ig.resources;

import com.intellij.psi.PsiExpression;
import com.intellij.psi.PsiMethodCallExpression;
import com.intellij.psi.PsiNewExpression;
import com.intellij.psi.PsiReferenceExpression;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.psiutils.TypeUtils;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;

public class JNDIResourceInspection extends ResourceInspection {

  @Override
  @NotNull
  public String getID() {
    return "JNDIResourceOpenedButNotSafelyClosed";
  }

  @Override
  @NotNull
  public String getDisplayName() {
    return InspectionGadgetsBundle.message("jndi.resource.opened.not.closed.display.name");
  }

  protected boolean isResourceCreation(PsiExpression expression) {
    if (expression instanceof PsiMethodCallExpression) {
      final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression)expression;
      final PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression();
      @NonNls final String methodName = methodExpression.getReferenceName();
      if ("list".equals(methodName) || "listBindings".equals(methodName)) {
        final PsiExpression qualifier = methodExpression.getQualifierExpression();
        if (qualifier == null) {
          return false;
        }
        return TypeUtils.expressionHasTypeOrSubtype(qualifier, "javax.naming.Context");
      }
      else if ("getAll".equals(methodName)) {
        final PsiExpression qualifier = methodExpression.getQualifierExpression();
        if (qualifier == null) {
          return false;
        }
        return TypeUtils.expressionHasTypeOrSubtype(qualifier, "javax.naming.directory.Attribute", "javax.naming.directory.Attributes") !=
               null;
      }
      else {
        return false;
      }
    }
    else if (expression instanceof PsiNewExpression) {
      return TypeUtils.expressionHasTypeOrSubtype(expression, "javax.naming.InitialContext");
    }
    return false;
  }
}