Example usage for java.lang ThreadLocal ThreadLocal

Introduction

In this page you can find the example usage for java.lang ThreadLocal ThreadLocal.

Prototype

public ThreadLocal()

Source Link

Document

Creates a thread local variable.

Usage

From source file:ReadWriteLock.java

/**
 * Constructs read-write lock.//from ww  w . j a  va2 s  .  c o m
 */

public ReadWriteLock() {
    readLocksByThread = new ThreadLocal() {
        public Object initialValue() {
            return new Count();
        }
    };

    readLocks = 0;
    writeLocks = 0;
    writeLockedBy = null;
}

From source file:org.talend.dataquality.common.inference.ConcurrentAnalyzer.java

private ConcurrentAnalyzer(int maxSize, AnalyzerSupplier<Analyzer<T>> supplier) {
    GenericKeyedObjectPool.Config config = new GenericKeyedObjectPool.Config();
    config.maxTotal = maxSize;/*from  www .  j a  v  a  2 s .c om*/
    config.maxActive = maxSize;
    config.maxIdle = maxSize / 2;
    config.minIdle = maxSize / 2;
    config.maxWait = -1;
    // #1: Initialize a ThreadLocal backed with a generic object pool -> allows getting previously borrowed instance
    // and return to pool on remove() call.
    // #2: Pool is expected to be thread safe.
    final KeyedObjectPool<Thread, Analyzer<T>> pool = new GenericKeyedObjectPool<>(new Factory<>(supplier),
            config);
    this.threadLocal = new ThreadLocal<Analyzer<T>>() {

        @Override
        protected Analyzer<T> initialValue() {
            try {
                return pool.borrowObject(Thread.currentThread());
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

        @Override
        public void remove() {
            try {
                // Order matters here as remove() causes get() to return null.
                pool.returnObject(Thread.currentThread(), get());
            } catch (Exception e) {
                throw new RuntimeException(e);
            } finally {
                // Thread local keeps a lot of references, make sure everything gets cleaned up on error.
                super.remove();
            }
        }
    };
}

From source file:de.scoopgmbh.copper.persistent.StandardJavaSerializer.java

public void setCompressorMaxSize(int compressorMaxSize) {
    this.compressorMaxSize = compressorMaxSize;
    compressorTL = new ThreadLocal<Compressor>() {
        @Override/*from w  w w  .j a  v a 2s .co m*/
        protected Compressor initialValue() {
            return new Compressor(Deflater.BEST_COMPRESSION, StandardJavaSerializer.this.compressorMaxSize);
        }
    };
}

From source file:com.anite.meercat.PersistenceLocator.java

/**
 * Private Constructor to prevent construction
 *//*from   w w  w.java  2  s .  c  o  m*/
private PersistenceLocator() {
    if (threadLocal == null) {
        threadLocal = new ThreadLocal();
    }
}

From source file:de.scoopgmbh.copper.test.versioning.compatibility.TestJavaSerializer.java

public void setCompressorMaxSize(int compressorMaxSize) {
    this.compressorMaxSize = compressorMaxSize;
    compressorTL = new ThreadLocal<Compressor>() {
        @Override/*from   ww w.j  a  v a2 s .c om*/
        protected Compressor initialValue() {
            return new Compressor(Deflater.BEST_COMPRESSION, TestJavaSerializer.this.compressorMaxSize);
        }
    };
}

From source file:org.dragoneronca.nlp.wol.domain.WolDomainContext.java

private WolDomainContext() {
    WolConfiguration wolConfiguration = WolConfiguration.getInstance();
    PropertiesConfiguration configuration = wolConfiguration.getConfiguration(CONFIG_FILE);
    String persistenceUnitName = configuration.getString(PERSISTENCE_UNIT_NAME);
    entityManagerFactory = Persistence.createEntityManagerFactory(persistenceUnitName);
    tlEntityManager = new ThreadLocal<>();
}

From source file:monasca.thresh.infrastructure.persistence.AlarmDAOImpl.java

@Inject
public AlarmDAOImpl(DBI db) {
    this.db = db;
    this.simpleDateFormatter = new ThreadLocal<>();
}

From source file:com.workplacesystems.queuj.process.seam.SeamTransaction.java

@Factory(value = "transactionContext", autoCreate = true, scope = ScopeType.APPLICATION)
public ThreadLocal<TransactionContext> createTransactionContext() {
    return new ThreadLocal<TransactionContext>() {

        @Override/*from   ww w . j  a va 2s  . com*/
        protected TransactionContext initialValue() {
            TransactionContext context = new TransactionContext();
            log.debug("Starting transaction " + context.transactionId);
            return context;
        }
    };
}

From source file:com.stratio.cassandra.index.schema.ColumnMapperDate.java

/**
 * Builds a new {@link ColumnMapperDate} using the specified pattern.
 *
 * @param pattern The {@link SimpleDateFormat} pattern to be used.
 *//*w w w.  j a  v  a  2  s .c  o  m*/
@JsonCreator
public ColumnMapperDate(@JsonProperty("pattern") String pattern) {
    super(new AbstractType<?>[] { AsciiType.instance, UTF8Type.instance, Int32Type.instance, LongType.instance,
            IntegerType.instance, FloatType.instance, DoubleType.instance, DecimalType.instance,
            TimestampType.instance }, new AbstractType[] { LongType.instance, TimestampType.instance });
    this.pattern = pattern == null ? DEFAULT_PATTERN : pattern;
    concurrentDateFormat = new ThreadLocal<DateFormat>() {
        @Override
        protected DateFormat initialValue() {
            return new SimpleDateFormat(ColumnMapperDate.this.pattern);
        }
    };
}

From source file:org.apache.lens.cube.metadata.UpdatePeriod.java

private static DateFormat getSecondlyFormat() {
    if (secondlyFormat == null) {
        secondlyFormat = new ThreadLocal<DateFormat>() {
            @Override/* w w  w .  j a  va2  s  . com*/
            protected SimpleDateFormat initialValue() {
                return new SimpleDateFormat(SECONDLY.formatStr());
            }
        };
    }
    return secondlyFormat.get();
}