Example usage for com.google.common.base Suppliers memoize

Introduction

In this page you can find the example usage for com.google.common.base Suppliers memoize.

Prototype

public static <T> Supplier<T> memoize(Supplier<T> delegate)

Source Link

Document

Returns a supplier which caches the instance retrieved during the first call to get() and returns that value on subsequent calls to get() .

Usage

From source file:org.jabylon.common.util.config.DynamicConfigUtil.java

private static synchronized void createSuppliers() {
    configTabs = Suppliers.memoize(Suppliers.compose(new IConfigurationElementLoader(),
            Suppliers.ofInstance("org.jabylon.rest.ui.configTab")));
    configSections = Suppliers.memoize(Suppliers.compose(new IConfigurationElementLoader(),
            Suppliers.ofInstance("org.jabylon.rest.ui.config")));

}

From source file:org.apache.beam.sdk.io.AvroUtils.java

/** Helper to get around the fact that {@link Schema} itself is not serializable. */
public static Supplier<Schema> serializableSchemaSupplier(String jsonSchema) {
    return Suppliers.memoize(Suppliers.compose(new JsonToSchema(), Suppliers.ofInstance(jsonSchema)));
}

From source file:org.locationtech.geogig.storage.bdbje.JEStagingDatabase_v0_2.java

private static Supplier<JEObjectDatabase> stagingDbSupplier(final EnvironmentBuilder envBuilder,
        final ConfigDatabase configDB, final Hints hints) {
    return Suppliers.memoize(new Supplier<JEObjectDatabase>() {
        @Override//  w w w .j a  v a2 s.  co  m
        public JEObjectDatabase get() {
            boolean readOnly = hints.getBoolean(Hints.STAGING_READ_ONLY);
            envBuilder.setIsStagingDatabase(true);
            JEObjectDatabase db = new JEObjectDatabase_v0_2(configDB, envBuilder, readOnly,
                    JEStagingDatabase.ENVIRONMENT_NAME);
            return db;
        }
    });
}

From source file:org.locationtech.geogig.storage.bdbje.JEStagingDatabase_v0_1.java

private static Supplier<JEObjectDatabase> stagingDbSupplier(final EnvironmentBuilder envBuilder,
        final ConfigDatabase configDB, final Hints hints) {
    return Suppliers.memoize(new Supplier<JEObjectDatabase>() {
        @Override/*w w w .ja v a2 s. c  o  m*/
        public JEObjectDatabase get() {
            boolean readOnly = hints.getBoolean(Hints.STAGING_READ_ONLY);
            envBuilder.setIsStagingDatabase(true);
            JEObjectDatabase db = new JEObjectDatabase_v0_1(configDB, envBuilder, readOnly,
                    JEStagingDatabase.ENVIRONMENT_NAME);
            return db;
        }
    });
}

From source file:com.eucalyptus.auth.Regions.java

private static <T> Supplier<T> serviceLoaderSupplier(final Class<T> serviceClass) {
    return Suppliers.memoize(new Supplier<T>() {
        @Override/*from w ww .j a v a2  s .com*/
        public T get() {
            return ServiceLoader.load(serviceClass).iterator().next();
        }
    });
}

From source file:com.facebook.buck.android.ClassNodeListSupplier.java

public static Supplier<ImmutableList<ClassNode>> createMemoized(Iterable<Path> jarPaths) {
    return Suppliers.memoize(new ClassNodeListSupplier(jarPaths));
}

From source file:org.immutables.generator.ExtensionLoader.java

public static Supplier<ImmutableSet<String>> findExtensions(final String resource) {
    // Provide lazy-once supplier
    return Suppliers.memoize(new Supplier<ImmutableSet<String>>() {
        @Override//from   w  ww  . ja  v  a2 s  .c  o  m
        public ImmutableSet<String> get() {
            List<String> extensions = Lists.newArrayList();

            // best effort to read it from compilation classpath
            if (StaticEnvironment.isInitialized()) {
                try {
                    String lines = getClasspathResourceText(StaticEnvironment.processing().getFiler(),
                            resource);
                    extensions.addAll(RESOURCE_SPLITTER.splitToList(lines));
                } catch (RuntimeException | IOException cannotReadCompilationClasspath) {
                    // we ignore this as we did or best effort
                    // and there are no plans to halt whole compilation
                }
            }

            ClassLoader classLoader = ExtensionLoader.class.getClassLoader();
            try {
                Enumeration<URL> resources = classLoader.getResources(resource);
                while (resources.hasMoreElements()) {
                    URL nextElement = resources.nextElement();
                    String lines = Resources.toString(nextElement, StandardCharsets.UTF_8);
                    extensions.addAll(RESOURCE_SPLITTER.splitToList(lines));
                }
            } catch (RuntimeException | IOException cannotReadAnnotationProcessingClasspath) {
                // we ignore this as we did or best effort
                // and there are no plans to halt whole compilation
            }
            return FluentIterable.from(extensions).toSet();
        }
    });
}

From source file:org.jabylon.rest.ui.model.ProgressionModel.java

public ProgressionModel(String id) {
    this.modelSupplier = Suppliers.memoize(Suppliers.compose(new LookupFunction(), Suppliers.ofInstance(id)));
    this.id = id;
}

From source file:org.opendaylight.controller.cluster.datastore.identifiers.TransactionChainIdentifier.java

public TransactionChainIdentifier(final String memberName, final long counter) {
    this.memberName = memberName;
    stringRepresentation = Suppliers.memoize(new Supplier<String>() {
        @Override/*ww w . ja  v  a  2  s . co  m*/
        public String get() {
            final StringBuilder sb = new StringBuilder();
            sb.append(memberName).append(CHAIN_SEPARATOR);
            sb.append(counter);
            return sb.toString();
        }
    });
}

From source file:com.google.eclipse.mechanic.internal.ScannersExtensionPoint.java

/**
 * Return the {@link TaskScanner} supplier, initializing it if required.
 *
 * <p>The supplier is memoized, so it will return the same instantiated
 * objects upon repeated calls./*w  w w .j  a va 2 s.  c om*/
 */
public static Supplier<List<TaskScanner>> getInstance() {
    return Suppliers.memoize(new Supplier<List<TaskScanner>>() {
        public List<TaskScanner> get() {
            return SingletonHolder.instance.getInstances();
        }
    });
}