gemfire-core/src/main/java/com/gemstone/gemfire/internal/cache/VMThinRegionEntryHeapStringKey2.java

/*=========================================================================
 * Copyright (c) 2010-2014 Pivotal Software, Inc. All Rights Reserved.
 * This product is protected by U.S. and international copyright
 * and intellectual property laws. Pivotal products are covered by
 * one or more patents listed at http://www.pivotal.io/patents.
 *=========================================================================
 */
package com.gemstone.gemfire.internal.cache;
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
import java.util.concurrent.atomic.AtomicLongFieldUpdater;
import com.gemstone.gemfire.internal.util.concurrent.CustomEntryConcurrentHashMap.HashEntry;
// macros whose definition changes this class:
// disk: DISK
// lru: LRU
// stats: STATS
// versioned: VERSIONED
// offheap: OFFHEAP
// One of the following key macros must be defined:
// key object: KEY_OBJECT
// key int: KEY_INT
// key long: KEY_LONG
// key uuid: KEY_UUID
// key string1: KEY_STRING1
// key string2: KEY_STRING2
/**
 * Do not modify this class. It was generated.
 * Instead modify LeafRegionEntry.cpp and then run
 * bin/generateRegionEntryClasses.sh from the directory
 * that contains your build.xml.
 */
public class VMThinRegionEntryHeapStringKey2 extends VMThinRegionEntryHeap {
  public VMThinRegionEntryHeapStringKey2 (RegionEntryContext context, String key,
      Object value
      , boolean byteEncode
      ) {
    super(context,
          value
        );
    // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
    // caller has already confirmed that key.length <= MAX_INLINE_STRING_KEY
    long tmpBits1 = 0L;
    long tmpBits2 = 0L;
    if (byteEncode) {
      for (int i=key.length()-1; i >= 0; i--) {
        // Note: we know each byte is <= 0x7f so the "& 0xff" is not needed. But I added it in to keep findbugs happy.
        if (i < 7) {
          tmpBits1 |= (byte)key.charAt(i) & 0xff;
          tmpBits1 <<= 8;
        } else {
          tmpBits2 <<= 8;
          tmpBits2 |= (byte)key.charAt(i) & 0xff;
        }
      }
      tmpBits1 |= 1<<6;
    } else {
      for (int i=key.length()-1; i >= 0; i--) {
        if (i < 3) {
          tmpBits1 |= key.charAt(i);
          tmpBits1 <<= 16;
        } else {
          tmpBits2 <<= 16;
          tmpBits2 |= key.charAt(i);
        }
      }
    }
    tmpBits1 |= key.length();
    this.bits1 = tmpBits1;
    this.bits2 = tmpBits2;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  // common code
  protected int hash;
  private HashEntry<Object, Object> next;
  @SuppressWarnings("unused")
  private volatile long lastModified;
  private static final AtomicLongFieldUpdater<VMThinRegionEntryHeapStringKey2> lastModifiedUpdater
    = AtomicLongFieldUpdater.newUpdater(VMThinRegionEntryHeapStringKey2.class, "lastModified");
  private volatile Object value;
  @Override
  protected final Object getValueField() {
    return this.value;
  }
  @Override
  protected void setValueField(Object v) {
    this.value = v;
  }
  protected long getlastModifiedField() {
    return lastModifiedUpdater.get(this);
  }
  protected boolean compareAndSetLastModifiedField(long expectedValue, long newValue) {
    return lastModifiedUpdater.compareAndSet(this, expectedValue, newValue);
  }
  /**
   * @see HashEntry#getEntryHash()
   */
  public final int getEntryHash() {
    return this.hash;
  }
  protected void setEntryHash(int v) {
    this.hash = v;
  }
  /**
   * @see HashEntry#getNextEntry()
   */
  public final HashEntry<Object, Object> getNextEntry() {
    return this.next;
  }
  /**
   * @see HashEntry#setNextEntry
   */
  public final void setNextEntry(final HashEntry<Object, Object> n) {
    this.next = n;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  // key code
  // strlen is encoded in lowest 6 bits (max strlen is 63)
  // character encoding info is in bits 7 and 8
  // The other bits are used to encoded character data.
  private final long bits1;
  // bits2 encodes character data
  private final long bits2;
  private int getKeyLength() {
    return (int) (this.bits1 & 0x003fL);
  }
  private int getEncoding() {
    // 0 means encoded as char
    // 1 means encoded as bytes that are all <= 0x7f;
    return (int) (this.bits1 >> 6) & 0x03;
  }
  @Override
  public final Object getKey() {
    int keylen = getKeyLength();
    char[] chars = new char[keylen];
    long tmpBits1 = this.bits1;
    long tmpBits2 = this.bits2;
    if (getEncoding() == 1) {
      for (int i=0; i < keylen; i++) {
        if (i < 7) {
          tmpBits1 >>= 8;
          chars[i] = (char) (tmpBits1 & 0x00ff);
        } else {
          chars[i] = (char) (tmpBits2 & 0x00ff);
          tmpBits2 >>= 8;
        }
      }
    } else {
      for (int i=0; i < keylen; i++) {
        if (i < 3) {
          tmpBits1 >>= 16;
        chars[i] = (char) (tmpBits1 & 0x00FFff);
        } else {
          chars[i] = (char) (tmpBits2 & 0x00FFff);
          tmpBits2 >>= 16;
        }
      }
    }
    return new String(chars);
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  @Override
  public boolean isKeyEqual(Object k) {
    if (k instanceof String) {
      String str = (String)k;
      int keylen = getKeyLength();
      if (str.length() == keylen) {
        long tmpBits1 = this.bits1;
        long tmpBits2 = this.bits2;
        if (getEncoding() == 1) {
          for (int i=0; i < keylen; i++) {
            char c;
            if (i < 7) {
              tmpBits1 >>= 8;
              c = (char) (tmpBits1 & 0x00ff);
            } else {
              c = (char) (tmpBits2 & 0x00ff);
              tmpBits2 >>= 8;
            }
            if (str.charAt(i) != c) {
              return false;
            }
          }
        } else {
          for (int i=0; i < keylen; i++) {
            char c;
            if (i < 3) {
              tmpBits1 >>= 16;
              c = (char) (tmpBits1 & 0x00FFff);
            } else {
              c = (char) (tmpBits2 & 0x00FFff);
              tmpBits2 >>= 16;
            }
            if (str.charAt(i) != c) {
              return false;
            }
          }
        }
        return true;
      }
    }
    return false;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
}