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:net.sourceforge.cobertura.metrics.model.location.SourceLocation.java

/**
 * {@inheritDoc}//from  w  ww  . j  a va 2s  .c om
 */
@Override
public boolean equals(final Object obj) {

    // Check sanity
    if (obj == null) {
        return false;
    }

    // All done.
    return (obj instanceof SourceLocation) && (hashCode() == obj.hashCode());
}

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From source file:org.largecollections.CacheSetWithUnqHashCode.java

public boolean remove(Object e) {
    boolean contains = this.contains(e);
    if (contains) {
        size--;/*from  w  w  w.ja  v  a2s  .c o m*/
        db.delete(Integer.toString(e.hashCode()).getBytes());
    }
    return contains;
}

---

From source file:org.apache.wsrp4j.persistence.xml.driver.PersistentHandlerImpl.java

/**
 * Store a single XML file, contained in the persistentDataObject to
 * the persistent file store via the marshalFile method of the input
 * object. The filename of the object is collected with it's hashcode
 * internally./*  w  w  w .  j av  a  2  s.  c o m*/
 *
 * @param persistentDataObject
 *
 * @throws WSRPException
 */
public void store(PersistentDataObject persistentDataObject) throws WSRPException {

    String MN = "store";

    if (log.isDebugEnabled()) {
        log.debug(Utility.strEnter(MN));
    }

    Mapping mapping = null;
    Marshaller marshaller = null;
    FileWriter fileWriter = null;
    String filename = null;

    try {

        PersistentInformationXML persistentInformation = (PersistentInformationXML) persistentDataObject
                .getPersistentInformation();

        Object o = persistentDataObject.getLastElement();
        int hashCode = o.hashCode();
        String code = new Integer(hashCode).toString();
        filename = (String) _filenameMap.get(code);

        if (filename == null) {
            persistentInformation.updateFileName(code);
            filename = persistentInformation.getFilename();
            _filenameMap.put(code, filename);
        }

        File file = new File(filename);

        if (log.isDebugEnabled()) {
            log.debug("Filename for store: " + filename + " with code: " + code);
        }

        fileWriter = new FileWriter(file);

        if (persistentInformation.getMappingFileName() != null) {

            mapping = new Mapping();
            mapping.loadMapping(persistentInformation.getMappingFileName());
            marshaller = new Marshaller(fileWriter);
            marshaller.setMapping(mapping);
        }

        ((PersistentDataObjectXML) persistentDataObject).marshalFile(fileWriter, marshaller);

        fileWriter.close();

    } catch (Exception e) {
        // could not store object to persistent file
        WSRPXHelper.throwX(log, ErrorCodes.STORE_OBJECT_ERROR, e);
    }

    if (log.isDebugEnabled()) {
        log.debug(Utility.strExit(MN));
    }

}

---

From source file:org.springjutsu.validation.ValidationEvaluationContext.java

/**
 * @param bean The bean to check for repeated validation
 * @return true if the given bean has already been validated.
 *///from  w  w  w  .j av  a  2 s .  c  om
protected boolean previouslyValidated(Object bean) {
    return checkedModelHashes.peek().contains(bean.hashCode());
}

---

From source file:CompactHashSet.java

/**
 * Returns <tt>true</tt> if this set contains the specified element.
 * /*from  www .  jav a  2s .c  o m*/
 * @param o
 *            element whose presence in this set is to be tested.
 * @return <tt>true</tt> if this set contains the specified element.
 */
public boolean contains(Object o) {
    if (o == null)
        o = nullObject;

    int hash = o.hashCode();
    int index = (hash & 0x7FFFFFFF) % objects.length;
    int offset = 1;

    // search for the object (continue while !null and !this object)
    while (objects[index] != null && !(objects[index].hashCode() == hash && objects[index].equals(o))) {
        index = ((index + offset) & 0x7FFFFFFF) % objects.length;
        offset = offset * 2 + 1;

        if (offset == -1)
            offset = 2;
    }

    return objects[index] != null;
}

---

From source file:org.apache.wsrp4j.persistence.xml.driver.PersistentHandlerImpl.java

/**
 * Restores a single XML file into the persistentDataObject. The filename
 * used is the filename stored in the PersistentFileInformation, contained
 * in the PersistentDataObject.//from   w w  w  . j a  v a 2 s.  co  m
 *
 * @param persistentDataObject
 * @return PersistentDataObjct
 *
 * @throws WSRPException
 */
public PersistentDataObject restore(PersistentDataObject persistentDataObject) throws WSRPException {

    String MN = "restore";

    if (log.isDebugEnabled()) {
        log.debug(Utility.strEnter(MN));
    }

    Mapping mapping = null;
    Unmarshaller unmarshaller = null;

    try {

        PersistentInformationXML persistentInformation = (PersistentInformationXML) persistentDataObject
                .getPersistentInformation();

        if (persistentInformation.getMappingFileName() != null) {

            mapping = new Mapping();
            mapping.loadMapping(persistentInformation.getMappingFileName());
            unmarshaller = new Unmarshaller(mapping);
        }

        File file = new File(persistentInformation.getFilename());

        if (file.isFile()) {

            FileReader fileReader = new FileReader(file);

            try {

                ((PersistentDataObjectXML) persistentDataObject).unMarshalFile(fileReader, unmarshaller);
                fileReader.close();

                Object o = persistentDataObject.getLastElement();
                int hashCode = o.hashCode();
                String code = new Integer(hashCode).toString();
                _filenameMap.put(code, file.getAbsolutePath());

                if (log.isDebugEnabled()) {
                    log.debug("File: " + file.getAbsolutePath() + " added with hashCode = " + code);
                }

            } catch (Exception e) {

                // could not restore a single file from persistent store
                WSRPXHelper.throwX(log, ErrorCodes.RESTORE_OBJECT_ERROR, e);
            }

        }

    } catch (Exception e) {

        // castor persistent failure
        WSRPXHelper.throwX(log, ErrorCodes.RESTORE_OBJECT_ERROR, e);
    }

    if (log.isDebugEnabled()) {
        log.debug(Utility.strExit(MN));
    }

    return persistentDataObject;

}

---

From source file:nl.nn.adapterframework.util.StringTagger.java

/**
 * Returns whether two objects are the same
 * @param ob the key of the value to retrieve
 *///w  ww.  j  ava 2  s. c o m
public boolean equals(Object ob) {
    return (ob instanceof Map) && (ob.hashCode() == this.hashCode());
}

---

From source file:org.lexevs.cache.AbstractMethodCachingBean.java

protected String getArgumentKey(Object argument) {
    StringBuffer sb = new StringBuffer();
    if (argument == null) {
        sb.append(NULL_VALUE_KEY);/*w w  w . j  av  a 2s  .c  o  m*/
    } else {
        sb.append(argument.hashCode());
    }
    return sb.toString();
}

---

From source file:org.malaguna.cmdit.service.reflection.ReflectionUtils.java

public boolean compareAndUpdateAttribute(Object oldObj, Object newObj, String atributo, boolean update,
        StringBuffer msgBuffer, String msgContext) {
    boolean result = false;

    if (oldObj != null && newObj != null) {
        oldObj = hpu.unproxy(oldObj);/*from  w w  w.ja v  a 2  s .  c  om*/
        newObj = hpu.unproxy(newObj);

        if (!isHibernateProxy(oldObj) && !isHibernateProxy(newObj)) {
            PropertyDescriptor desc = null;

            try {
                String firstAttribute = null;
                String restAttribute = null;

                int pos = atributo.indexOf(".");
                if (pos >= 0) {
                    firstAttribute = atributo.substring(0, pos);
                    restAttribute = atributo.substring(pos + 1);
                } else {
                    firstAttribute = atributo;
                }

                desc = PropertyUtils.getPropertyDescriptor(oldObj, firstAttribute);

                if (desc != null) {
                    Object oldValue = hpu.unproxy(desc.getReadMethod().invoke(oldObj));
                    Object newValue = hpu.unproxy(desc.getReadMethod().invoke(newObj));

                    if (restAttribute == null && !isHibernateProxy(oldValue) && !isHibernateProxy(newValue)) {
                        String auxChangeMsg = null;

                        result = (oldValue != null) ? compareObjects(desc, oldValue, newValue)
                                : (newValue == null);
                        if (!result) {
                            if (msgBuffer != null) {
                                auxChangeMsg = buildChangeMessage(desc, firstAttribute, oldValue, newValue,
                                        msgContext);
                            }
                            if (update) {
                                updateOldValue(oldObj, desc, oldValue, newValue);
                            }
                        }

                        if (msgBuffer != null)
                            msgBuffer.append(getAppendMsg(auxChangeMsg, msgBuffer));
                    }

                    if (restAttribute != null) {
                        if (Collection.class.isAssignableFrom(desc.getPropertyType())) {
                            Collection<?> oldSetAux = (Collection<?>) oldValue;
                            Collection<?> newSetAux = (Collection<?>) newValue;

                            if (oldValue != null && newValue != null) {
                                Collection<?> intersection = CollectionUtils.intersection(oldSetAux, newSetAux);

                                for (Object obj : intersection) {
                                    RUPredicate rup = new RUPredicate(obj.hashCode());
                                    Object oldElement = CollectionUtils.find(oldSetAux, rup);
                                    Object newElement = CollectionUtils.find(newSetAux, rup);

                                    String context = (msgContext != null) ? msgContext + firstAttribute
                                            : firstAttribute;
                                    context += "([" + oldElement.toString() + "]).";
                                    compareAndUpdateAttribute(oldElement, newElement, restAttribute, update,
                                            msgBuffer, context);
                                }
                            }
                        } else {
                            compareAndUpdateAttribute(oldValue, newValue, restAttribute, update, msgBuffer);
                        }
                    }
                }
            } catch (NoSuchMethodException e) {
                String error = "Error in compareAndUpdateAttribute, class type [%s] has no property [%s]";
                throw new RuntimeException(String.format(error, oldObj.getClass(), atributo), e);
            } catch (IllegalAccessException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    return result;
}

---

From source file:com.alibaba.citrus.util.internal.apache.lang.HashCodeBuilderTests.java

public void testObject() {
    Object obj = null;
    assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode());
    obj = new Object();
    assertEquals(17 * 37 + obj.hashCode(), new HashCodeBuilder(17, 37).append(obj).toHashCode());
}

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