content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software GmbH & Co. KG, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.xml.content;
  
  import org.opencms.file.CmsFile;
  import org.opencms.file.CmsObject;
  import org.opencms.file.CmsProperty;
  import org.opencms.i18n.CmsEncoder;
  import org.opencms.main.CmsEvent;
  import org.opencms.main.I_CmsEventListener;
  import org.opencms.main.OpenCms;
  import org.opencms.test.OpenCmsTestCase;
  import org.opencms.test.OpenCmsTestProperties;
  import org.opencms.util.CmsFileUtil;
  import org.opencms.util.CmsResourceTranslator;
  import org.opencms.xml.CmsXmlContentDefinition;
  import org.opencms.xml.CmsXmlEntityResolver;
  import org.opencms.xml.CmsXmlException;
  import org.opencms.xml.CmsXmlUtils;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  
  import junit.extensions.TestSetup;
  import junit.framework.Test;
  import junit.framework.TestSuite;
  
  /**
   * Tests for XML content schema changes.<p>
   */
  public class TestCmsXmlContentSchemaModifications extends OpenCmsTestCase {
  
      /**
       * Simple schema data container structure.<p>
       */
      class SchemaDef {
  
          /** The schema id to use in the OpenCms schema cache. */
          private String m_id;
  
          /** The name of the schema file in in the RFS. */
          private String m_file;
  
          /**
           * Creates the schema data container structure.<p>
           *
           * @param id the schema id to use in the OpenCms schema cache
           * @param file the name of the schema file in in the RFS
           */
          public SchemaDef(String id, String file) {
  
              m_id = id;
              m_file = file;
          }
  
          /**
           * Returns the name of the schema file in in the RFS.
           *
           * @return the name of the schema file in in the RFS
           */
          public String getFile() {
  
              return m_file;
          }
  
          /**
           * Returns the schema id to use in the OpenCms schema cache.
           *
           * @return the schema id to use in the OpenCms schema cache
           */
          public String getId() {
  
              return m_id;
          }
      }
  
      /** The schema id. */
      private static final String SCHEMA_SYSTEM_ID_1 = "http://www.opencms.org/test1.xsd";
  
      /**
       * Default JUnit constructor.<p>
       *
       * @param arg0 JUnit parameters
       */
      public TestCmsXmlContentSchemaModifications(String arg0) {
  
          super(arg0);
      }
  
      /**
       * Test suite for this test class.<p>
       *
       * @return the test suite
       */
      public static Test suite() {
  
          OpenCmsTestProperties.initialize(org.opencms.test.AllTests.TEST_PROPERTIES_PATH);
  
          TestSuite suite = new TestSuite();
          suite.setName(TestCmsXmlContentSchemaModifications.class.getName());
  
          suite.addTest(new TestCmsXmlContentSchemaModifications("testVfsFile"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testUsageDemo"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testAddSchemaNodes"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testRemoveSchemaNodes"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testReArrangeSchemaNodes"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testCombinedChangeSchemaNodes"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testNestedChangeSchemaNodes"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testXsdTranslation"));
          suite.addTest(new TestCmsXmlContentSchemaModifications("testMaintainOrderInChoiceAfterSchemaChange"));
  
          TestSetup wrapper = new TestSetup(suite) {
  
              @Override
              protected void setUp() {
  
                  setupOpenCms("simpletest", "/");
              }
  
              @Override
              protected void tearDown() {
  
                  removeOpenCms();
              }
          };
  
          return wrapper;
      }
  
      /**
       * Test adding new nodes to the XML schema.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testAddSchemaNodes() throws Exception {
  
          echo("Testing adding new nodes to XML schema");
  
          runTestWithChangedSchema(
              SCHEMA_SYSTEM_ID_1,
              "/testAddSchemaNodes.html",
              "xmlcontent-definition-1.xsd",
              "xmlcontent-1.xml",
              "xmlcontent-definition-1.mod1.xsd",
              "xmlcontent-1.mod1.xml");
      }
  
      /**
       * Combined modification test for simple (non-nested) XML schema.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testCombinedChangeSchemaNodes() throws Exception {
  
          echo("Combined modification test for simple (non-nested) XML schema");
  
          runTestWithChangedSchema(
              SCHEMA_SYSTEM_ID_1,
              "/testCombinedChangeSchemaNodesA.html",
              "xmlcontent-definition-1.xsd",
              "xmlcontent-1.xml",
              "xmlcontent-definition-1.mod4.xsd",
              "xmlcontent-1.mod4.xml");
  
          runTestWithChangedSchema(
              SCHEMA_SYSTEM_ID_1,
              "/testCombinedChangeSchemaNodesB.html",
              "xmlcontent-definition-1.mod4.xsd",
              "xmlcontent-1.mod4.xml",
              "xmlcontent-definition-1.mod5.xsd",
              "xmlcontent-1.mod5.xml");
  
          // test a schema change where all nodes become invalid
          runTestWithChangedSchema(
              SCHEMA_SYSTEM_ID_1,
              "/testCombinedChangeSchemaNodesC.html",
              "xmlcontent-definition-1.mod5.xsd",
              "xmlcontent-1.mod5.xml",
              "xmlcontent-definition-1.mod6.xsd",
              "xmlcontent-1.mod6.xml");
      }
  
      /**
       * Tests if changes in the XML schema structure maintains the order of an existing xsd:choice list.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testMaintainOrderInChoiceAfterSchemaChange() throws Exception {
  
          echo("Testing if changes in the XML schema structure maintains the order of an existing xsd:choice list.");
  
          List<SchemaDef> originalSchemas = new ArrayList<SchemaDef>();
          List<SchemaDef> changedSchemas = new ArrayList<SchemaDef>();
  
          originalSchemas.add(new SchemaDef("http://www.opencms.org/ChoiceElement.xsd", "choicetest-ori-element.xsd"));
          originalSchemas.add(new SchemaDef("http://www.opencms.org/ChoiceTest.xsd", "choicetest-ori.xsd"));
  
          changedSchemas.add(new SchemaDef("http://www.opencms.org/ChoiceElement.xsd", "choicetest-mod-element.xsd"));
          changedSchemas.add(new SchemaDef("http://www.opencms.org/ChoiceTest.xsd", "choicetest-mod.xsd"));
  
          runTestWithChangedSchemas(
              "/choicetest-content.xml",
              originalSchemas,
              "choicetest-data-ori.xml",
              changedSchemas,
              "choicetest-data-mod.xml");
      }
  
      /**
       * Combined modification test for a nested XML schema.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testNestedChangeSchemaNodes() throws Exception {
  
          echo("Combined modification test for a nested XML schema");
  
          CmsXmlEntityResolver resolver = new CmsXmlEntityResolver(getCmsObject());
  
          cacheSchema(
              resolver,
              "http://www.opencms.org/test3.xsd",
              "org/opencms/xml/content/xmlcontent-definition-3.xsd");
  
          cacheSchema(
              resolver,
              "http://www.opencms.org/test4.xsd",
              "org/opencms/xml/content/xmlcontent-definition-4.xsd");
  
          runTestWithChangedSchema(
              "http://www.opencms.org/test3.xsd",
              "/testCombinedNestedSchemaNodesA.html",
              "xmlcontent-definition-3.xsd",
              "xmlcontent-4.xml",
              "xmlcontent-definition-3.mod1.xsd",
              "xmlcontent-4.mod1.xml");
  
          runTestWithChangedSchema(
              "http://www.opencms.org/test3.xsd",
              "/testCombinedNestedSchemaNodesB.html",
              "xmlcontent-definition-3.mod1.xsd",
              "xmlcontent-4.mod1.xml",
              "xmlcontent-definition-3.mod2.xsd",
              "xmlcontent-4.mod2.xml");
      }
  
      /**
       * Test re-arranging nodes in the XML schema.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testReArrangeSchemaNodes() throws Exception {
  
          echo("Test re-arranging nodes in the XML schema");
  
          runTestWithChangedSchema(
              SCHEMA_SYSTEM_ID_1,
              "/testReArrangeSchemaNodes.html",
              "xmlcontent-definition-1.xsd",
              "xmlcontent-1.xml",
              "xmlcontent-definition-1.mod3.xsd",
              "xmlcontent-1.mod3.xml");
      }
  
      /**
       * Test removing nodes from the XML schema.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testRemoveSchemaNodes() throws Exception {
  
          echo("Testing removing nodes from an XML schema");
  
          runTestWithChangedSchema(
              SCHEMA_SYSTEM_ID_1,
              "/testRemoveSchemaNodes.html",
              "xmlcontent-definition-1.xsd",
              "xmlcontent-1.xml",
              "xmlcontent-definition-1.mod2.xsd",
              "xmlcontent-1.mod2.xml");
      }
  
      /**
       * Demo test for using the XML content correcting API.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testUsageDemo() throws Exception {
  
          CmsObject cms = getCmsObject();
          CmsXmlEntityResolver resolver = new CmsXmlEntityResolver(cms);
  
          // setup steps for demo test 1:
          // filenames to use
          String changedSchema = "org/opencms/xml/content/xmlcontent-definition-1.mod4.xsd";
          String originalFile = "org/opencms/xml/content/xmlcontent-1.xml";
          String filename = "/testUsageDemo.html";
          // cache the changed content definition
          cacheSchema(resolver, SCHEMA_SYSTEM_ID_1, changedSchema);
          // read the XML content from the test directory, usually this would be from the VFS
          String content = CmsFileUtil.readFile(originalFile, CmsEncoder.ENCODING_UTF_8);
  
          // DEMO TEST 1:
  
          // assumtion: the schema definition of an existing XML content has changed
          // the XML content is unmarshaled (using the changed schema) and then validated
          // after validation fails, it is corrected using the API and then saved to the VFS
  
          // unmarshal the XML content (the schema is already "wrong")
          CmsXmlContent xmlcontent = CmsXmlContentFactory.unmarshal(content, CmsEncoder.ENCODING_UTF_8, resolver);
  
          // output the XML content (unmodified version)
          System.out.println(xmlcontent.toString());
  
          // validate the XML structure - must be invalid because of the schema change
          Exception ex = null;
          try {
              xmlcontent.validateXmlStructure(resolver);
          } catch (CmsXmlException e) {
              ex = e;
          }
          // required exception must haven been thrown or the test is a failure
          assertNotNull(ex);
  
          // enable "auto correction mode" - this is required or the XML structure will not be fully corrected
          xmlcontent.setAutoCorrectionEnabled(true);
          // now correct the XML
          xmlcontent.correctXmlStructure(cms);
  
          // output the XML content (modified version)
          System.out.println(xmlcontent.toString());
  
          // check again if the XML is correct - this time it must work without exception
          xmlcontent.validateXmlStructure(resolver);
          // demo test 1 is finished
  
          // setup steps for demo test 2:
  
          // write the content to the VFS
          cms.createResource(
              filename,
              OpenCms.getResourceManager().getResourceType("xmlcontent"),
              xmlcontent.toString().getBytes(xmlcontent.getEncoding()),
              Collections.<CmsProperty> emptyList());
          // change the XML schema definition for the XML content
          // it's important that the schema is changed _before_ the content is unmarshaled
          // in a "real world" use case this should be no problem as the schema will have been changed in another request
          changedSchema = "org/opencms/xml/content/xmlcontent-definition-1.mod5.xsd";
          // update the XML schema cache
          cacheSchema(resolver, SCHEMA_SYSTEM_ID_1, changedSchema);
  
          // DEMO TEST 2:
  
          // assumption: a file is to be corrected automatically while writing it to the VFS
          // for this, a special OpenCms request context attribute has been introduced
          // if this is set to a Boolean.TRUE object, the XML content is always corrected while saving it to the VFS
          CmsFile file = cms.readFile(filename);
  
          // this is not normally required, but illustrates the differences in the API behaviour
          // trying to write the file now (with the changed schema but XML still using the old schema) is not possible
          // this is because of the build-in validation while writing
          ex = null;
          try {
              file = cms.writeFile(file);
          } catch (CmsXmlException e) {
              ex = e;
          }
          // required exception must haven been thrown or the test is a failure
          assertNotNull(ex);
  
          // now set the "automatic correction" request context attribute
          cms.getRequestContext().setAttribute(CmsXmlContent.AUTO_CORRECTION_ATTRIBUTE, Boolean.TRUE);
  
          // write the file again - the correction will now be done automatically while writing (no exceptions)
          file = cms.writeFile(file);
  
          // output the XML content (modified version)
          System.out.println(new String(file.getContents()));
          // demo test 2 is finished
      }
  
      /**
       * Demo test for using the XML content correcting API.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testVfsFile() throws Exception {
  
          CmsObject cms = getCmsObject();
          CmsXmlEntityResolver resolver = new CmsXmlEntityResolver(cms);
  
          // filenames to use
          String changedSchema = "org/opencms/xml/content/xmlcontent-definition-2.mod.xsd";
          String originalFile = "org/opencms/xml/content/xmlcontent-2.mod.xml";
          String filename = "/testVfsFile.html";
          // cache the changed content definition
          cacheSchema(resolver, "http://www.opencms.org/test2.xsd", changedSchema);
          // read the XML content from the test directory, usually this would be from the VFS
          String content = CmsFileUtil.readFile(originalFile, CmsEncoder.ENCODING_UTF_8);
  
          // unmarshal the XML content (the schema is already using the "filereference")
          CmsXmlContent xmlcontent = CmsXmlContentFactory.unmarshal(content, CmsEncoder.ENCODING_UTF_8, resolver);
  
          // output the XML content (unmodified version)
          System.out.println(xmlcontent.toString());
  
          // validate the XML structure - must be invalid because of the schema change
          try {
              xmlcontent.validateXmlStructure(resolver);
              fail("xml content should not be valid");
          } catch (CmsXmlException e) {
              // ignore
          }
  
          // enable "auto correction mode" - this is required or the XML structure will not be fully corrected
          xmlcontent.setAutoCorrectionEnabled(true);
          // now correct the XML
          xmlcontent.correctXmlStructure(cms);
  
          // output the XML content (modified version)
          System.out.println(xmlcontent.toString());
  
          // check again if the XML is correct - this time it must work without exception
          xmlcontent.validateXmlStructure(resolver);
  
          // write the content to the VFS
          cms.createResource(
              filename,
              OpenCms.getResourceManager().getResourceType("xmlcontent"),
              CmsFileUtil.readFile(originalFile),
              Collections.<CmsProperty> emptyList());
  
          // assumption: a file is to be corrected automatically while writing it to the VFS
          // for this, a special OpenCms request context attribute has been introduced
          // if this is set to a Boolean.TRUE object, the XML content is always corrected while saving it to the VFS
          CmsFile file = cms.readFile(filename);
  
          // this is not normally required, but illustrates the differences in the API behaviour
          // trying to write the file now (with the changed schema but XML still using the old schema) is not possible
          // this is because of the build-in validation while writing
          try {
              cms.writeFile(file);
              fail("should fail to write the old xml file");
          } catch (CmsXmlException e) {
              // ok, ignore
          }
  
          // now set the "automatic correction" request context attribute
          cms.getRequestContext().setAttribute(CmsXmlContent.AUTO_CORRECTION_ATTRIBUTE, Boolean.TRUE);
  
          // write the file again - the correction will now be done automatically while writing (no exceptions)
          file = cms.writeFile(file);
  
          // output the XML content (modified version)
          System.out.println(new String(file.getContents()));
      }
  
      /**
       * Test for using the XSD translation.<p>
       *
       * @throws Exception in case the test fails
       */
      public void testXsdTranslation() throws Exception {
  
          CmsObject cms = getCmsObject();
          CmsXmlEntityResolver resolver = new CmsXmlEntityResolver(cms);
  
          CmsResourceTranslator oldXsdTranslator = OpenCms.getResourceManager().getXsdTranslator();
  
          String newSchema = "http://www.alkacon.com/changed-schema.xsd";
  
          CmsResourceTranslator xsdTranslator = new CmsResourceTranslator(
              new String[] {"s#^http://www\\.opencms\\.org/test1\\.xsd#" + newSchema + "#"},
              false);
  
          // set modified folder translator
          OpenCms.getResourceManager().setTranslators(
              OpenCms.getResourceManager().getFolderTranslator(),
              OpenCms.getResourceManager().getFileTranslator(),
              xsdTranslator);
  
          String schema = "org/opencms/xml/content/xmlcontent-definition-1.xsd";
          String rfsFile = "org/opencms/xml/content/xmlcontent-1.xml";
          // cache the content definition
          cacheSchema(resolver, SCHEMA_SYSTEM_ID_1, schema);
  
          // read the XML content from the test directory, usually this would be from the VFS
          String content = CmsFileUtil.readFile(rfsFile, CmsEncoder.ENCODING_UTF_8);
  
          // unmarshal the XML content
          CmsXmlContent xmlcontent = CmsXmlContentFactory.unmarshal(content, CmsEncoder.ENCODING_UTF_8, resolver);
          xmlcontent.correctXmlStructure(cms);
  
          String strContent = xmlcontent.toString();
          // output the XML content (modified version)
          System.out.println(strContent);
  
          assertTrue("Translated XSD schema not found", strContent.indexOf(newSchema) > 0);
  
          // restore original XSD translator
          OpenCms.getResourceManager().setTranslators(
              OpenCms.getResourceManager().getFolderTranslator(),
              OpenCms.getResourceManager().getFileTranslator(),
              oldXsdTranslator);
      }
  
      /**
       * Compares a given XML content with the contents of a file in the RFS and asserts the XML is identical.<p>
       *
       * @param xmlcontent the XML content to compare
       * @param filename the RFS name of the file to compare the XML content with
       * @param resolver the XML entitiy resolver to use
       *
       * @throws Exception if something goes wrong
       */
      private void assertXmlContent(CmsXmlContent xmlcontent, String filename, CmsXmlEntityResolver resolver)
      throws Exception {
  
          System.out.println(xmlcontent.toString());
          String content = CmsFileUtil.readFile(filename, CmsEncoder.ENCODING_UTF_8);
          assertEquals(
              CmsXmlUtils.unmarshalHelper(xmlcontent.toString(), resolver),
              CmsXmlUtils.unmarshalHelper(content, resolver));
      }
  
      /**
       * Updates the OpenCms XML entity resolver cache with a changed XML schema id.<p>
       *
       * @param resolver the OpenCms XML entity resolver to use
       * @param id the XML schema id to update in the resolver
       * @param filename the name of the file in the RFS where to read the new schema content from
       *
       * @throws Exception if something goes wrong
       */
      private void cacheSchema(CmsXmlEntityResolver resolver, String id, String filename) throws Exception {
  
          // fire "clear cache" event to clear up previously cached schemas
          OpenCms.fireCmsEvent(new CmsEvent(I_CmsEventListener.EVENT_CLEAR_CACHES, new HashMap<String, Object>()));
          // read the XML from the given file and store it in the resolver
          String content = CmsFileUtil.readFile(filename, CmsEncoder.ENCODING_UTF_8);
          CmsXmlContentDefinition definition = CmsXmlContentDefinition.unmarshal(content, id, resolver);
          CmsXmlEntityResolver.cacheSystemId(id, definition.getSchema().asXML().getBytes(CmsEncoder.ENCODING_UTF_8));
      }
  
      /**
       * Reads an XML content with the original schema, then changes the schema and corrects the XML content
       * with the new schema.<p>
       *
       * @param schemaId the XML schema id for the schema cache
       * @param filename the filename to write the XML content to in the OpenCms VFS
       * @param originalSchema the location of the original schema in the RFS
       * @param originalFile the location of the original XML file in the RFS
       * @param changedSchema the location of the changed schema in the RFS
       * @param changedFile the location of the changed XML file in the RFS (for comparison)
       *
       * @throws Exception if something goes wrong
       */
      private void runTestWithChangedSchema(
          String schemaId,
          String filename,
          String originalSchema,
          String originalFile,
          String changedSchema,
          String changedFile) throws Exception {
  
          List<SchemaDef> originalSchemas = new ArrayList<SchemaDef>();
          List<SchemaDef> changedSchemas = new ArrayList<SchemaDef>();
  
          originalSchemas.add(new SchemaDef(schemaId, originalSchema));
          changedSchemas.add(new SchemaDef(schemaId, changedSchema));
  
          runTestWithChangedSchemas(filename, originalSchemas, originalFile, changedSchemas, changedFile);
      }
  
      /**
       * Reads an XML content with a list of original schemas, then changes the schemas and corrects the XML content
       * with the new schemas.<p>
       *
       * @param filename the filename to write the XML content to in the OpenCms VFS
       * @param originalSchemas the list of the original schemas (id, name in RFS)
       * @param originalFile the location of the original XML file in the RFS
       * @param changedSchemas the list of the changed schemas (id, name in RFS)
       * @param changedFile the location of the changed XML file in the RFS (for comparison)
       *
       * @throws Exception if something goes wrong
       */
      private void runTestWithChangedSchemas(
          String filename,
          List<SchemaDef> originalSchemas,
          String originalFile,
          List<SchemaDef> changedSchemas,
          String changedFile) throws Exception {
  
          CmsObject cms = getCmsObject();
          String rfsPrefix = "org/opencms/xml/content/";
  
          // append default path to the filenames
          originalFile = rfsPrefix + originalFile;
          changedFile = rfsPrefix + changedFile;
  
          CmsXmlEntityResolver resolver = new CmsXmlEntityResolver(cms);
          // cache the ORIGINAL content definitions
          for (SchemaDef schema : originalSchemas) {
              cacheSchema(resolver, schema.getId(), rfsPrefix + schema.getFile());
          }
  
          // now create the XML content
          String content = CmsFileUtil.readFile(originalFile, CmsEncoder.ENCODING_UTF_8);
          CmsXmlContent xmlcontentOri = CmsXmlContentFactory.unmarshal(content, CmsEncoder.ENCODING_UTF_8, resolver);
  
          // validate the XML structure of the original content
          CmsXmlUtils.validateXmlStructure(content.getBytes(CmsEncoder.ENCODING_UTF_8), resolver);
  
          // save the XML content to the VFS
          cms.createResource(
              filename,
              OpenCms.getResourceManager().getResourceType("xmlcontent"),
              xmlcontentOri.toString().getBytes(xmlcontentOri.getEncoding()),
              Collections.<CmsProperty> emptyList());
  
          CmsFile file = cms.readFile(filename);
          CmsXmlContent xmlcontentRead = CmsXmlContentFactory.unmarshal(cms, file);
  
          // enable the XML auto correction mode on save
          cms.getRequestContext().setAttribute(CmsXmlContent.AUTO_CORRECTION_ATTRIBUTE, Boolean.TRUE);
  
          // write the file, it should not be changed
          cms.writeFile(file);
          assertXmlContent(xmlcontentRead, originalFile, resolver);
  
          // cache the CHANGED content definitions
          for (SchemaDef schema : changedSchemas) {
              cacheSchema(resolver, schema.getId(), rfsPrefix + schema.getFile());
          }
  
          // validate the general XML structure of the modified content
          CmsXmlUtils.validateXmlStructure(CmsFileUtil.readFile(changedFile), resolver);
  
          // write the file again, it should be changed according to the changed schema
          cms.writeFile(file);
  
          file = cms.readFile(filename);
          CmsXmlContent xmlcontentUpdated = CmsXmlContentFactory.unmarshal(cms, file);
          assertXmlContent(xmlcontentUpdated, changedFile, resolver);
      }
  }