Example usage for com.google.gwt.core.client.impl WeakMapping get

Introduction

In this page you can find the example usage for com.google.gwt.core.client.impl WeakMapping get.

Prototype

public static native Object get(Object instance, String key) ;

Source Link

Document

Returns the Object associated with the given key in the (key, value) mapping associated with the given Object instance.

Usage

From source file:com.google.web.bindery.autobean.shared.AutoBeanUtils.java

License:Apache License

/**
 * Return the single AutoBean wrapper that is observing the delegate object or
 * {@code null} if the parameter is {@code null}or not wrapped by an AutoBean.
 * /*from w  w  w.ja  v  a  2s . c  o m*/
 * @param delegate a delegate object, or {@code null}
 * @return the {@link AutoBean} wrapper for the delegate, or {@code null}
 */
@SuppressWarnings("unchecked")
public static <T, U extends T> AutoBean<T> getAutoBean(U delegate) {
    return delegate == null ? null : (AutoBean<T>) WeakMapping.get(delegate, AutoBean.class.getName());
}

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From source file:com.google.web.bindery.autobean.vm.impl.JsonSplittable.java

License:Apache License

private synchronized JsonSplittable makeSplittable(Object object) {
    if (JSONObject.NULL.equals(object)) {
        return null;
    }/*  www  .j a  va 2 s . c  o m*/
    /*
     * Maintain a 1:1 mapping between object instances and JsonSplittables.
     * Doing this with a WeakHashMap doesn't work on Android, since its org.json
     * arrays appear to have value-based equality.
     */
    JsonSplittable seen = (JsonSplittable) WeakMapping.get(object, JsonSplittable.class.getName());
    if (seen == null) {
        if (object instanceof JSONObject) {
            seen = new JsonSplittable((JSONObject) object);
            WeakMapping.setWeak(object, JsonSplittable.class.getName(), seen);
        } else if (object instanceof JSONArray) {
            seen = new JsonSplittable((JSONArray) object);
            WeakMapping.setWeak(object, JsonSplittable.class.getName(), seen);
        } else if (object instanceof String) {
            seen = new JsonSplittable(object.toString());
        } else if (object instanceof Number) {
            seen = new JsonSplittable(((Number) object).doubleValue());
        } else if (object instanceof Boolean) {
            seen = new JsonSplittable((Boolean) object);
        } else {
            throw new RuntimeException("Unhandled type " + object.getClass());
        }
    }
    return seen;
}

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From source file:de.csenk.gwt.commons.bean.shared.observe.ObservableBeans.java

License:Apache License

/**
 * Returns an {@link ObservableBean} for a {@code delegate} if any was previously created.
 *
 * @param delegate the delegate object.//from w w w  . j  ava 2  s .co  m
 * @return an {@link ObservableBean} instance or {@code null} if no {@link ObservableBean} could be associated with the {@code delegate}.
 */
@SuppressWarnings("unchecked")
public static <T> ObservableBean<T> get(T delegate) {
    if (delegate == null)
        return null;

    return (ObservableBean<T>) WeakMapping.get(delegate, ObservableBean.class.getName());
}

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