/*
 * Copyright 2000-2016 JetBrains s.r.o.
 *
 * 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 org.jetbrains.idea.devkit.dom.impl;

import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiField;
import com.intellij.util.SmartList;
import com.intellij.util.xml.DomUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.idea.devkit.dom.ExtensionPoint;
import org.jetbrains.idea.devkit.dom.IdeaPlugin;

import java.util.Collections;
import java.util.List;

public abstract class ExtensionPointImpl implements ExtensionPoint {

  @NotNull
  @Override
  public String getEffectiveName() {
    if (DomUtil.hasXml(getName())) {
      return getName().getRawText();
    }
    return getQualifiedName().getRawText();
  }

  @Nullable
  @Override
  public String getNamePrefix() {
    if (DomUtil.hasXml(getQualifiedName())) {
      return null;
    }

    final IdeaPlugin plugin = getParentOfType(IdeaPlugin.class, false);
    if (plugin == null) return null;

    return StringUtil.notNullize(plugin.getPluginId(), "com.intellij");
  }

  @NotNull
  @Override
  public String getEffectiveQualifiedName() {
    if (DomUtil.hasXml(getQualifiedName())) {
      return getQualifiedName().getRawText();
    }

    return getNamePrefix() + "." + getName().getRawText();
  }

  @Override
  public List<PsiField> collectMissingWithTags() {
    PsiClass beanClass = getBeanClass().getValue();
    if (beanClass == null) {
      return Collections.emptyList();
    }

    final List<PsiField> result = new SmartList<>();
    for (PsiField field : beanClass.getAllFields()) {
      if (ExtensionDomExtender.isClassField(field.getName()) &&
          ExtensionDomExtender.findWithElement(getWithElements(), field) == null) {
        result.add(field);
      }
    }
    return result;
  }
}

@@ -21,9 +21,9 @@
 -201
-6
+7
  Jet
@@ -1249,24 +1249,46 @@
      return 
+StringUtil.notNullize(
 getName().ge
@@ -1289,32 +1289,33 @@
 e().getRawText()
+)
 ;%0A    %7D%0A    retu
@@ -1309,32 +1309,54 @@
    %7D%0A    return 
+StringUtil.notNullize(
 getQualifiedName
@@ -1362,32 +1362,33 @@
 e().getRawText()
+)
 ;%0A  %7D%0A%0A  @Nullab
@@ -1823,16 +1823,38 @@
  return 
+StringUtil.notNullize(
 getQuali
@@ -1872,24 +1872,25 @@
 getRawText()
+)
 ;%0A    %7D%0A%0A   
@@ -1921,16 +1921,38 @@
 + %22.%22 + 
+StringUtil.notNullize(
 getName(
@@ -1965,16 +1965,17 @@
 awText()
+)
 ;%0A  %7D%0A%0A 

fix possible NPE