Example usage for com.google.common.base Optional fromNullable

Introduction

In this page you can find the example usage for com.google.common.base Optional fromNullable.

Prototype

public static <T> Optional<T> fromNullable(@Nullable T nullableReference)

Source Link

Document

If nullableReference is non-null, returns an Optional instance containing that reference; otherwise returns Optional#absent .

Usage

From source file:fathom.jcache.JCache.java

@Override
public void start() {
    // add application caches module
    Optional<String> applicationPackage = Optional.fromNullable(settings.getApplicationPackage());
    String fullClassName = ClassUtil.buildClassName(applicationPackage, CACHES_CLASS);
    if (ClassUtil.doesClassExist(fullClassName)) {
        Class<?> moduleClass = ClassUtil.getClass(fullClassName);
        if (CachesModule.class.isAssignableFrom(moduleClass)) {
            CachesModule cachesModule = (CachesModule) ClassUtil.newInstance(moduleClass);
            if (cachesModule != null) {
                log.info("Setting up JCache caches in '{}'", cachesModule.getClass().getName());
                cachesModule.setup(settings, cachingProvider.getCacheManager());
            }/* w  w  w .  j a  v a  2  s . co  m*/
        }
    }
}

From source file:com.googlecode.blaisemath.style.StyleContext.java

public StyleContext(@Nullable StyleContext parent) {
    this.parent = Optional.fromNullable(parent);
}

From source file:fr.obeo.releng.targetplatform.ui.handler.PDEIntegration.java

public PDEIntegration() {
    service = Optional.fromNullable(
            (ITargetPlatformService) PDECore.getDefault().acquireService(ITargetPlatformService.class));
}

From source file:org.kaloz.datafeed.processor.app.ProcessorService.java

public Optional<InstrumentPrice> findByProviderAndShortName(InstrumentPriceRequest instrumentPriceRequest) {
    return Optional.fromNullable(instrumentPriceRepository.findByProviderAndShortName(
            instrumentPriceRequest.getProvider(), instrumentPriceRequest.getShortName()));
}

From source file:com.facebook.buck.rules.ProjectConfigBuilder.java

public ProjectConfigBuilder setTestRule(@Nullable BuildRule testRule) {
    arg.testTarget = Optional.fromNullable(testRule);
    return this;
}

From source file:io.crate.sql.tree.ObjectColumnType.java

public ObjectColumnType(@Nullable String objectType, @Nullable List<ColumnDefinition> nestedColumns) {
    super("object");
    this.objectType = Optional.fromNullable(objectType);
    this.nestedColumns = MoreObjects.firstNonNull(nestedColumns, ImmutableList.<ColumnDefinition>of());
}

From source file:io.crate.sql.tree.CreateRepository.java

public CreateRepository(String repository, String type, @Nullable GenericProperties genericProperties) {
    this.repository = repository;
    this.type = type;
    this.properties = Optional.fromNullable(genericProperties);
}

From source file:io.crate.sql.tree.CreateSnapshot.java

public CreateSnapshot(QualifiedName name, @Nullable GenericProperties genericProperties) {
    this.name = name;
    this.properties = Optional.fromNullable(genericProperties);
    this.tableList = Optional.absent();

}

From source file:org.ctoolkit.services.endpoints.TransformerHelper.java

/**
 * Converts to <code>Integer</code> value if presented.
 *
 * @param map the map of properties taken from input JSON
 * @param key the JSON property as a key
 * @return the optional <code>Integer</code> value
 *///from  w  w w .j av a2 s.co  m
public static Optional<Integer> toInteger(Map<String, Object> map, String key) {
    checkNotNull(key);
    return Optional.fromNullable((Integer) map.get(key));
}

From source file:io.crate.sql.tree.RestoreSnapshot.java

public RestoreSnapshot(QualifiedName name, @Nullable GenericProperties genericProperties) {
    this.name = name;
    this.properties = Optional.fromNullable(genericProperties);
    this.tableList = Optional.absent();

}