Example usage for com.google.common.collect Iterators tryFind

Introduction

In this page you can find the example usage for com.google.common.collect Iterators tryFind.

Prototype

public static <T> Optional<T> tryFind(Iterator<T> iterator, Predicate<? super T> predicate) 

Source Link

Document

Returns an Optional containing the first element in iterator that satisfies the given predicate, if such an element exists.

Usage

From source file:com.dangdang.ddframe.rdb.sharding.constant.DatabaseType.java

/**
 * ??.//from  www .j  a v  a 2  s .c o  m
 * 
 * @param databaseProductName ?
 * @return ?
 */
public static DatabaseType valueFrom(final String databaseProductName) {
    Optional<DatabaseType> databaseTypeOptional = Iterators
            .tryFind(Arrays.asList(DatabaseType.values()).iterator(), new Predicate<DatabaseType>() {

                @Override
                public boolean apply(final DatabaseType input) {
                    return input.productName.equals(databaseProductName);
                }
            });
    if (databaseTypeOptional.isPresent()) {
        return databaseTypeOptional.get();
    }
    throw new UnsupportedOperationException(
            String.format("Can not support database type [%s].", databaseProductName));
}

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From source file:com.dangdang.ddframe.job.event.rdb.DatabaseType.java

/**
 * ??./*from  w  w w  . ja v  a  2s .  co m*/
 * 
 * @param databaseProductName ?
 * @return ?
 */
public static DatabaseType valueFrom(final String databaseProductName) {
    Optional<DatabaseType> databaseTypeOptional = Iterators
            .tryFind(Arrays.asList(DatabaseType.values()).iterator(), new Predicate<DatabaseType>() {
                @Override
                public boolean apply(final DatabaseType input) {
                    return input.productName.equals(databaseProductName);
                }
            });
    if (databaseTypeOptional.isPresent()) {
        return databaseTypeOptional.get();
    } else {
        throw new RuntimeException("Unsupported database:" + databaseProductName);
    }
}

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From source file:com.dangdang.ddframe.rdb.sharding.constants.DatabaseType.java

/**
 * ??./*from   w w w. ja  v a  2  s  .c  o m*/
 * 
 * @param databaseProductName ?
 * @return ?
 */
public static DatabaseType valueFrom(final String databaseProductName) {
    Optional<DatabaseType> databaseTypeOptional = Iterators
            .tryFind(Arrays.asList(DatabaseType.values()).iterator(), new Predicate<DatabaseType>() {
                @Override
                public boolean apply(final DatabaseType input) {
                    return input.productName.equals(databaseProductName);
                }
            });
    if (databaseTypeOptional.isPresent()) {
        return databaseTypeOptional.get();
    }
    throw new DatabaseTypeUnsupportedException(databaseProductName);
}

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From source file:org.fcrepo.http.commons.domain.Prefer.java

/**
 * Get the return tag, or a blank default, if none exists.
 * @return/*from  www  .j  a v a  2  s.c  o  m*/
 */
public PreferTag getReturn() {
    final Optional<PreferTag> aReturn = Iterators.tryFind(preferTags.iterator(), getPreferTag("return"));

    if (aReturn.isPresent()) {
        return aReturn.get();
    } else {
        return new PreferTag("");
    }
}

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From source file:com.addthis.bundle.core.BundleMapView.java

@Nullable
@Override/*w  ww  .  java  2 s.c  o m*/
public ValueObject get(Object key) {
    if (key instanceof BundleField) {
        return bundle.getValue((BundleField) key);
    } else {
        return Iterators.tryFind(bundle.iterator(), equalTo(key)).transform(this::get).orNull();
    }
}

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From source file:org.ow2.sirocco.cloudmanager.api.openstack.server.resources.nova.Extensions.java

@Override
public Response get(final String alias) {
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Getting extension " + alias);
    }//w ww . java  2  s .  com

    return ok(Iterators.tryFind(extensionProviders.iterator(), new Predicate<ExtensionProvider>() {
        @Override
        public boolean apply(ExtensionProvider input) {
            return input != null && input.getExtensionMetadata() != null
                    && input.getExtensionMetadata().alias.equals(alias);
        }
    }).orNull());
}

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From source file:org.ow2.sirocco.cloudmanager.api.openstack.server.resources.nova.ServerActions.java

/**
 *
 * @param actionName//  www .  ja  v a  2s  .co m
 * @return
 */
protected Action getAction(final String actionName) {
    if (actionName == null || actions == null) {
        return null;
    }
    return Iterators.tryFind(actions.iterator(), new Predicate<Action>() {
        @Override
        public boolean apply(Action action) {
            return actionName.equals(action.getName());
        }
    }).orNull();
}

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From source file:org.blockartistry.Presets.data.PresetConfig.java

public void save(@Nonnull final PresetInfo info) {
    if (!info.getFilename().endsWith(PRESET_EXT))
        info.setFilename(info.getFilename() + PRESET_EXT);

    save0(info);/*from w w w  .  ja  v  a  2  s.  co  m*/

    final Optional<PresetInfo> existing = Iterators.tryFind(this.presets.iterator(),
            new Predicate<PresetInfo>() {
                @Override
                public boolean apply(@Nonnull final PresetInfo input) {
                    return input.getFilename().equals(info.getFilename());
                }
            });

    if (existing.isPresent()) {
        this.presets.remove(existing.get());
    }
    this.presets.add(info);
}

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From source file:com.dangdang.ddframe.job.cloud.scheduler.state.running.RunningService.java

private Optional<TaskContext> findTask(final TaskContext taskContext) {
    return Iterators.tryFind(getRunningTasks(taskContext.getMetaInfo().getJobName()).iterator(),
            new Predicate<TaskContext>() {
                @Override//from w  ww  .j av  a2s  . c o  m
                public boolean apply(final TaskContext input) {
                    return input.equals(taskContext);
                }
            });
}

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From source file:org.richfaces.component.UIDataTableBase.java

protected boolean hasRowChildren() {
    return Iterators.tryFind(getChildren().iterator(), isRow).isPresent();
}

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