Example usage for org.springframework.util ObjectUtils nullSafeEquals

Introduction

In this page you can find the example usage for org.springframework.util ObjectUtils nullSafeEquals.

Prototype

public static boolean nullSafeEquals(@Nullable Object o1, @Nullable Object o2)

Source Link

Document

Determine if the given objects are equal, returning true if both are null or false if only one is null .

Usage

From source file:org.springframework.data.redis.connection.lettuce.LettuceClusterConnection.java

@Override
public String ping() {
    Collection<String> ping = clusterCommandExecutor
            .executeCommandOnAllNodes((LettuceClusterCommandCallback<String>) BaseRedisCommands::ping)
            .resultsAsList();/*from w  w  w . j a va  2s  .c  o  m*/

    for (String result : ping) {
        if (!ObjectUtils.nullSafeEquals("PONG", result)) {
            return "";
        }
    }

    return "PONG";
}

From source file:org.springframework.faces.mvc.bind.ReverseDataBinder.java

/**
 * Perform the reverse bind on the <tt>dataBinder</tt> provided in the constructor. Note: Calling with method will
 * also trigger a <tt>bind</tt> operation on the <tt>dataBinder</tt>. This method returns {@link PropertyValues}
 * containing a name/value pairs for each property that can be bound. Property values are encoded as Strings using
 * the property editors bound to the original dataBinder.
 * @return property values that could be re-bound using the data binder
 * @throws IllegalStateException if the target object values cannot be bound
 *///from   www  .j  a v a  2  s.  c  om
public PropertyValues reverseBind() {
    Assert.notNull(dataBinder.getTarget(),
            "ReverseDataBinder.reverseBind can only be used with a DataBinder that has a target object");
    MutablePropertyValues rtn = new MutablePropertyValues();
    BeanWrapper target = PropertyAccessorFactory.forBeanPropertyAccess(dataBinder.getTarget());
    PropertyDescriptor[] propertyDescriptors = target.getPropertyDescriptors();

    BeanWrapper defaultValues = null;
    if (skipDefaultValues) {
        defaultValues = newDefaultTargetValues(dataBinder.getTarget());
    }

    for (int i = 0; i < propertyDescriptors.length; i++) {
        PropertyDescriptor property = propertyDescriptors[i];
        String propertyName = getPropertyName(property);
        Object propertyValue = target.getPropertyValue(propertyName);

        if (isSkippedProperty(property)) {
            continue;
        }

        if (!isMutableProperty(property)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Ignoring '" + propertyName + "' due to missing read/write methods");
            }
            continue;
        }

        if (defaultValues != null
                && ObjectUtils.nullSafeEquals(defaultValues.getPropertyValue(propertyName), propertyValue)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Skipping '" + propertyName + "' as property contains default value");
            }
            continue;
        }

        // Find a property editor
        PropertyEditorRegistrySupport propertyEditorRegistrySupport = null;
        if (target instanceof PropertyEditorRegistrySupport) {
            propertyEditorRegistrySupport = (PropertyEditorRegistrySupport) target;
        }
        PropertyEditor propertyEditor = findEditor(propertyEditorRegistrySupport, target.getWrappedInstance(),
                target.getPropertyType(propertyName), property);

        // Convert and store the value
        String convertedPropertyValue = convertToStringUsingPropertyEditor(propertyValue, propertyEditor);
        if (convertedPropertyValue != null) {
            rtn.addPropertyValue(propertyName, convertedPropertyValue);
        }
    }

    dataBinder.bind(rtn);
    BindingResult bindingResult = dataBinder.getBindingResult();
    if (bindingResult.hasErrors()) {
        throw new IllegalStateException("Unable to reverse bind from target '" + dataBinder.getObjectName()
                + "', the properties '" + rtn + "' will result in binding errors when re-bound "
                + bindingResult.getAllErrors());
    }
    return rtn;
}

From source file:org.springframework.integration.kafka.listener.KafkaTopicOffsetManager.java

private void checkAndAddData(KafkaMessage kafkaMessage) {
    Key key = MessageUtils.decodeKey(kafkaMessage, KEY_CODEC);
    Long value = MessageUtils.decodePayload(kafkaMessage, VALUE_CODEC);
    if (log.isTraceEnabled()) {
        log.trace("Loading key " + key + " with value " + value);
    }/*from   w  w  w .  j  a  v  a  2s .c o  m*/
    // we are only interested for messages that are intended for this consumer id
    if (key != null && ObjectUtils.nullSafeEquals(this.consumerId, key.getConsumerId())) {
        if (null != value) {
            // write data in the cache, overwriting the older values
            this.data.put(key.getPartition(), value);
        } else {
            // a null value means that the data has been deleted, but not compacted yet
            if (this.data.containsKey(key.getPartition())) {
                this.data.remove(key.getPartition());
            }
        }
    }
}

From source file:org.springframework.jca.context.SpringContextResourceAdapter.java

@Override
public boolean equals(Object obj) {
    return (obj instanceof SpringContextResourceAdapter && ObjectUtils.nullSafeEquals(
            getContextConfigLocation(), ((SpringContextResourceAdapter) obj).getContextConfigLocation()));
}

From source file:org.springframework.messaging.support.MessageHeaderAccessor.java

/**
 * Set the value for the given header name.
 * <p>If the provided value is {@code null}, the header will be removed.
 *///w ww  .j  a v  a2 s .  c o  m
public void setHeader(String name, Object value) {
    if (isReadOnly(name)) {
        throw new IllegalArgumentException("'" + name + "' header is read-only");
    }
    verifyType(name, value);
    if (!ObjectUtils.nullSafeEquals(value, getHeader(name))) {
        this.modified = true;
        if (value != null) {
            this.headers.getRawHeaders().put(name, value);
        } else {
            this.headers.getRawHeaders().remove(name);
        }
    }
}

From source file:org.springframework.richclient.command.support.DefaultCommandRegistry.java

/**
 * This method is provided as a private helper so that it can be called by the constructor, 
 * instead of the constructor having to call the public overridable setParent method. 
 *///w w  w .ja  va2s .com
private void internalSetParent(CommandRegistry parentRegistry) {

    if (!ObjectUtils.nullSafeEquals(this.parent, parentRegistry)) {

        if (this.parent != null) {
            this.parent.removeCommandRegistryListener(this);
        }

        this.parent = parentRegistry;

        if (this.parent != null) {
            this.parent.addCommandRegistryListener(this);
        }

    }

}

From source file:org.springframework.richclient.core.LabeledObjectSupport.java

protected boolean hasChanged(Object currentValue, Object proposedValue) {
    return !ObjectUtils.nullSafeEquals(currentValue, proposedValue);
}

From source file:org.springframework.shell.core.JLineShell.java

public void promptLoop() {
    setShellStatus(Status.USER_INPUT);/*  w  w  w  .j  a  va  2  s.c o  m*/
    String line;
    String prompt = getPromptText();

    try {
        while (exitShellRequest == null && (reader != null && ((line = reader.readLine()) != null))) {
            JLineLogHandler.resetMessageTracking();
            setShellStatus(Status.USER_INPUT);

            if ("".equals(line)) {
                continue;
            }

            executeCommand(line);

            String newPrmpt = getPromptText();
            if (!ObjectUtils.nullSafeEquals(prompt, newPrmpt)) {
                prompt = newPrmpt;
                setPromptPath(null);
            }
            //System.out.println("executed command:" + line);
        }
    } catch (IOException ioe) {
        throw new IllegalStateException("Shell line reading failure", ioe);
    }
    setShellStatus(Status.SHUTTING_DOWN);
}

From source file:org.springframework.springfaces.mvc.bind.ReverseDataBinder.java

/**
 * Perform the reverse bind on the <tt>dataBinder</tt> provided in the constructor. Note: Calling with method will
 * also trigger a <tt>bind</tt> operation on the <tt>dataBinder</tt>. This method returns {@link PropertyValues}
 * containing a name/value pairs for each property that can be bound. Property values are encoded as Strings using
 * the property editors bound to the original dataBinder.
 * @return property values that could be re-bound using the data binder
 * @throws IllegalStateException if the target object values cannot be bound
 *///from   ww w  . jav  a  2 s  . c o m
public PropertyValues reverseBind() {
    Assert.notNull(this.dataBinder.getTarget(),
            "ReverseDataBinder.reverseBind can only be used with a DataBinder that has a target object");

    MutablePropertyValues rtn = new MutablePropertyValues();
    BeanWrapper target = PropertyAccessorFactory.forBeanPropertyAccess(this.dataBinder.getTarget());

    ConversionService conversionService = this.dataBinder.getConversionService();
    if (conversionService != null) {
        target.setConversionService(conversionService);
    }

    PropertyDescriptor[] propertyDescriptors = target.getPropertyDescriptors();

    BeanWrapper defaultValues = null;
    if (this.skipDefaultValues) {
        defaultValues = newDefaultTargetValues(this.dataBinder.getTarget());
    }

    for (int i = 0; i < propertyDescriptors.length; i++) {
        PropertyDescriptor property = propertyDescriptors[i];
        String propertyName = PropertyAccessorUtils.canonicalPropertyName(property.getName());
        Object propertyValue = target.getPropertyValue(propertyName);

        if (isSkippedProperty(property)) {
            continue;
        }

        if (!isMutableProperty(property)) {
            if (this.logger.isDebugEnabled()) {
                this.logger.debug("Ignoring '" + propertyName + "' due to missing read/write methods");
            }
            continue;
        }

        if (defaultValues != null
                && ObjectUtils.nullSafeEquals(defaultValues.getPropertyValue(propertyName), propertyValue)) {
            if (this.logger.isDebugEnabled()) {
                this.logger.debug("Skipping '" + propertyName + "' as property contains default value");
            }
            continue;
        }

        // Find a property editor
        PropertyEditorRegistrySupport propertyEditorRegistrySupport = null;
        if (target instanceof PropertyEditorRegistrySupport) {
            propertyEditorRegistrySupport = (PropertyEditorRegistrySupport) target;
        }

        PropertyEditor propertyEditor = findEditor(propertyName, propertyEditorRegistrySupport,
                target.getWrappedInstance(), target.getPropertyType(propertyName),
                target.getPropertyTypeDescriptor(propertyName));

        // Convert and store the value
        String convertedPropertyValue = convertToStringUsingPropertyEditor(propertyValue, propertyEditor);
        if (convertedPropertyValue != null) {
            rtn.addPropertyValue(propertyName, convertedPropertyValue);
        }
    }

    this.dataBinder.bind(rtn);
    BindingResult bindingResult = this.dataBinder.getBindingResult();
    if (bindingResult.hasErrors()) {
        throw new IllegalStateException("Unable to reverse bind from target '" + this.dataBinder.getObjectName()
                + "', the properties '" + rtn + "' will result in binding errors when re-bound "
                + bindingResult.getAllErrors());
    }
    return rtn;
}

From source file:org.springframework.statemachine.action.DistributedLeaderAction.java

@Override
public void execute(StateContext<S, E> context) {
    StateMachine<S, E> left = context.getStateMachine();
    StateMachine<S, E> right = ensemble.getLeader();
    boolean leader = (left != null & right != null)
            && ObjectUtils.nullSafeEquals(left.getUuid(), right.getUuid());
    if (log.isDebugEnabled()) {
        log.debug("Distibuted action leader status is " + leader);
    }//from   ww w  .j a v  a  2  s.  c  o m
    if (leader) {
        action.execute(context);
    }
}