Examples with DataRecord org.apache.jackrabbit.core.data.DataRecord used on opensource projects

Example 76 with DataRecord

use of org.apache.jackrabbit.core.data.DataRecord in project jackrabbit-oak by apache.

the class LengthCachingDataStoreTest method writeBackNewEntries.

@Test
public void writeBackNewEntries() throws Exception {
    //1. Add some entries to FDS
    FileDataStore fds1 = new FileDataStore();
    File fds1Dir = tempFolder.newFolder();
    int minSize = fds1.getMinRecordLength();
    fds1.init(fds1Dir.getAbsolutePath());
    DataRecord dr1 = fds1.addRecord(byteStream(minSize + 10));
    DataRecord dr2 = fds1.addRecord(byteStream(minSize + 100));
    //2. Try reading them so as to populate the new mappings
    LengthCachingDataStore fds2 = new LengthCachingDataStore();
    fds2.setDelegateClass(FileDataStore.class.getName());
    fds2.init(fds1Dir.getAbsolutePath());
    fds2.getRecord(new DataIdentifier(dr1.getIdentifier().toString()));
    fds2.getRecord(new DataIdentifier(dr2.getIdentifier().toString()));
    File mappingFile = fds2.getMappingFile();
    //3. Get the mappings pushed to file
    fds2.close();
    //4. Open a new FDS pointing to new directory. Read should still work fine
    //as they would be served by the mapping data
    LengthCachingDataStore fds3 = new LengthCachingDataStore();
    fds3.setDelegateClass(FileDataStore.class.getName());
    fds3.setMappingFilePath(mappingFile.getAbsolutePath());
    fds3.init(tempFolder.newFolder().getAbsolutePath());
    fds3.setReadOnly(false);
    assertEquals(dr1.getLength(), fds3.getRecord(dr1.getIdentifier()).getLength());
    assertEquals(dr2.getLength(), fds3.getRecord(dr2.getIdentifier()).getLength());
    DataRecord dr3 = fds3.addRecord(byteStream(minSize + 200));
    //5. Close again so see if update of existing file works
    fds3.close();
    LengthCachingDataStore fds4 = new LengthCachingDataStore();
    fds4.setDelegateClass(FileDataStore.class.getName());
    fds4.setMappingFilePath(mappingFile.getAbsolutePath());
    fds4.init(tempFolder.newFolder().getAbsolutePath());
    assertEquals(dr3.getLength(), fds4.getRecord(dr3.getIdentifier()).getLength());
    assertEquals(dr2.getLength(), fds4.getRecord(dr2.getIdentifier()).getLength());
}