Example usage for java.lang Object hashCode

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public native int hashCode();

Source Link

Document

Returns a hash code value for the object.

Usage

From source file:ResourceBundleSupport.java

/**
 * Returns a hash code for an object, or zero if the object is
 * <code>null</code>.//from w  ww.  ja v  a2  s.  com
 *
 * @param object the object (<code>null</code> permitted).
 * @return The object's hash code (or zero if the object is
 *         <code>null</code>).
 */
public static int hashCode(final Object object) {
    int result = 0;
    if (object != null) {
        result = object.hashCode();
    }
    return result;
}

From source file:ch.cyberduck.core.DefaultPathPredicate.java

/**
 * Comparing the hashcode./*w  w  w.j  av a  2 s .c o  m*/
 *
 * @see #hashCode()
 */
@Override
public boolean equals(Object other) {
    if (null == other) {
        return false;
    }
    if (other instanceof CacheReference) {
        return this.hashCode() == other.hashCode();
    }
    return false;
}

From source file:org.openmrs.module.reporting.report.service.db.MappedDefinitionType.java

/** 
 * @see UserType#hashCode(Object)/*  w ww .  jav  a  2s .c  o  m*/
 */
public int hashCode(Object x) throws HibernateException {
    return x.hashCode();
}

From source file:com.cloud2bubble.services.RuleEngine.java

/**
 * Inserts any object into the Rule Engine.
 * //w w  w.j  a  v a 2  s.c  o m
 * @param o a fact 
 */
public void insertInSession(Object o) {
    FactHandle fh = ksession.insert(o);
    facts.put(o.hashCode(), fh);
}

From source file:nl.surfnet.coin.shared.cache.MethodNameAwareCacheKeyGenerator.java

@Override
public Object generate(Object target, Method method, Object... params) {
    Object hash = super.generate(target, method, params);
    return new StringBuilder(hash != null ? hash.toString() : "31").append(method.getName())
            .append(target.hashCode()).toString();
}

From source file:org.web4thejob.message.DefaultMessage.java

@Override
public boolean equals(Object obj) {
    if (this == obj)
        return true;
    if (obj == null)
        return false;
    return obj instanceof Message && hashCode() == obj.hashCode();

}

From source file:com.vmware.appfactory.common.base.AbstractApiController.java

/**
 * Sets an e-tag on the request calculated from the given DAO.
 *
 * If the request contains the same e-tag, this means the resource
 * has not been modified since the last request, and the browser cache
 * already contains the whole response./*from   w  w w .ja  va  2 s . co  m*/
 *
 * In this case, we'll set the HTTP headers to indicate that the
 * response has not been modified, and return true.
 *
 * @param request    - web request, used to get client's etag (if any)
 * @param response   - web response, used to set 304 response if necessary
 * @param objCollection - A collection of objects. If set, the e-tag is computed based on the hashCode
 *                      for each of the objects.
 * @param daoList    - one or more DAOs to query.  The e-tag is computed using the current state of each
 *                      of these tables, such that if any changes the computed e-tag should change.
 * @return
 * true - if the client already has a cached version of the resource.
 * When this is returned, this method has written an HTTP response,
 * and the caller should simply return immediately.
 *
 * false - if the E-Tag header has been set and the caller should
 * proceed to generate and write a normal response.
 *
 * @throws IOException
 * if the 304 response could not be written
 */
public boolean checkModified(@Nonnull HttpServletRequest request, @Nonnull HttpServletResponse response,
        Collection<? extends Object> objCollection, @Nonnull AfDao... daoList) throws IOException {

    String charSequence = "optimus-prime";
    Hasher hasher = hashFunction.newHasher().putString(charSequence);

    for (AfDao dao : daoList) {
        long lastModified = dao.lastModified();
        long size = dao.countAll();
        hasher.putLong(lastModified).putLong(size);
    }

    // If the objects are not present, put a 0 value indicating 0 sized objects.
    if (CollectionUtils.isNotEmpty(objCollection)) {
        for (Object o : objCollection) {
            if (o != null) {
                hasher.putInt(o.hashCode());
            } else {
                // Indicating that there was an object but null.
                hasher.putInt(0);
            }
        }
    }

    String newToken = hasher.hash().toString();

    String oldToken = applyETagCache(request, response, newToken, false);
    return newToken.equals(oldToken);
}

From source file:com.espertech.esper.core.context.mgr.ContextControllerHashedGetterHashMultiple.java

public Object get(EventBean eventBean) throws PropertyAccessException {
    EventBean[] events = new EventBean[] { eventBean };

    int hashCode = 0;
    for (int i = 0; i < evaluators.length; i++) {
        Object result = evaluators[i].evaluate(events, true, null);
        if (result == null) {
            continue;
        }//w w w . ja v  a 2  s .co m
        if (hashCode == 0) {
            hashCode = result.hashCode();
        } else {
            hashCode = 31 * hashCode + result.hashCode();
        }
    }

    if (hashCode >= 0) {
        return hashCode % granularity;
    }
    return -hashCode % granularity;
}

From source file:com.oodlemud.appengine.counter.Counter.java

@java.lang.Override
@java.lang.SuppressWarnings("all")
public int hashCode() {
    final int PRIME = 31;
    int result = 1;
    final java.lang.Object $counterName = this.getCounterName();
    result = result * PRIME + ($counterName == null ? 0 : $counterName.hashCode());
    final java.lang.Object $counterStatus = this.getCounterStatus();
    result = result * PRIME + ($counterStatus == null ? 0 : $counterStatus.hashCode());
    final long $count = this.getCount();
    result = result * PRIME + (int) ($count >>> 32 ^ $count);
    return result;
}

From source file:org.codehaus.groovy.grails.orm.hibernate.cfg.IdentityEnumType.java

public int hashCode(Object o) throws HibernateException {
    return o.hashCode();
}