Android Open Source - Jello Append Only

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Back to project page Jello.

License

The source code is released under:

Apache License

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Java Source Code

package com.atteo.jello.space;
//from   w w  w .  j ava  2s  .  c o m
import com.atteo.jello.Record;
import com.atteo.jello.store.PagedFile;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.google.inject.name.Named;

@Singleton
public class AppendOnly implements SpaceManagerPolicy {
  static {
    System.loadLibrary("AppendOnly");
  }

  private final SpaceManager spaceManager;

  @Inject
  public AppendOnly(final AppendOnlyCache appendOnlyCache,
      final SpaceManager spaceManager, final PagedFile pagedFile,
      @Named("pageSize") final short pageSize,
      @Named("blockSize") final short blockSize,
      @Named("maxRecordSize") final int maxRecordSize) {
    init(appendOnlyCache, spaceManager, pagedFile, pageSize, blockSize,
        maxRecordSize);

    this.spaceManager = spaceManager;

  }

  public native int acquirePage();

  public native boolean acquireRecord(Record record, int length);

  public void commit() {
    spaceManager.commit();
  }

  public void create() {
    spaceManager.create();
  }

  public boolean isPageUsed(final int id) {
    return spaceManager.isPageUsed(id);
  }

  public boolean load() {
    return spaceManager.load();
  }

  public native boolean reacquireRecord(Record record, int length);

  public native void releasePage(int id);

  public native void releaseRecord(Record record);

  public void setPageUsed(final int id, final boolean used) {
    spaceManager.setPageUsed(id, used);
  }

  private native void init(AppendOnlyCache appendOnlyCache,
      SpaceManager spaceManager, PagedFile pagedFile, short pageSize,
      short blockSize, int maxRecordSize);
}

Java Source Code List