user/src/com/google/gwt/requestfactory/client/impl/ProxyJsoImpl.java - gwt - Git at Google

 /*
  * Copyright 2010 Google Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  * License for the specific language governing permissions and limitations under
  * the License.
  */
 package com.google.gwt.requestfactory.client.impl;

 import com.google.gwt.core.client.GWT;
 import com.google.gwt.core.client.JavaScriptObject;
 import com.google.gwt.core.client.JsArray;
 import com.google.gwt.requestfactory.shared.EntityProxy;
 import com.google.gwt.requestfactory.shared.EnumProperty;
 import com.google.gwt.requestfactory.shared.Property;
 import com.google.gwt.requestfactory.shared.PropertyReference;

 import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.util.Date;

 /**
  * <p>
  * <span style="color:red">Experimental API: This class is still under rapid
  * development, and is very likely to be deleted. Use it at your own risk.
  * </span>
  * </p>
  * JSO implementation of {@link EntityProxy}, used to back subclasses of
  * {@link ProxyImpl}.
  */
 public class ProxyJsoImpl extends JavaScriptObject implements EntityProxy {

   public static ProxyJsoImpl create(JavaScriptObject rawJsoWithIdAndVersion,
       ProxySchema<?> schema, RequestFactoryJsonImpl requestFactory) {

     ProxyJsoImpl rtn = rawJsoWithIdAndVersion.cast();
     assert rtn.getId() != null;
     assert rtn.getVersion() != null;

     rtn.setSchema(schema);
     rtn.setRequestFactory(requestFactory);
     return rtn;
   };

   public static JsArray<ProxyJsoImpl> create(
       JsArray<JavaScriptObject> rawJsos, ProxySchema<?> schema,
       RequestFactoryJsonImpl requestFactory) {

     for (int i = 0; i < rawJsos.length(); i++) {
       ProxyJsoImpl.create(rawJsos.get(i), schema, requestFactory);
     }

     return rawJsos.cast();
   }

   public static ProxyJsoImpl create(Long id, Integer version,
       ProxySchema<?> schema, RequestFactoryJsonImpl requestFactory) {
     ProxyJsoImpl rtn = createEmpty();
     rtn.set(EntityProxy.id, id);
     rtn.set(EntityProxy.version, version);
     return create(rtn, schema, requestFactory);
   }

   public static ProxyJsoImpl emptyCopy(ProxyJsoImpl jso) {
     Long id = jso.get(EntityProxy.id);
     Integer version = jso.get(EntityProxy.version);
     ProxySchema<?> schema = jso.getSchema();

     ProxyJsoImpl copy = create(id, version, schema, jso.getRequestFactory());
     return copy;
   }

   /**
    * Create an empty JSO, unsafe to return.
    */
   private static native ProxyJsoImpl createEmpty() /*-{
     return {};
   }-*/;

   protected ProxyJsoImpl() {
   }

   public final native void delete(String name)/*-{
     delete this[name];
   }-*/;

   @SuppressWarnings("unchecked")
   public final <V> V get(Property<V> property) {
     if (isNullOrUndefined(property.getName())) {
       return null;
     }

     try {
       if (Boolean.class.equals(property.getType())) {
         return (V) Boolean.valueOf(getBoolean(property.getName()));
       }
       if (Character.class.equals(property.getType())) {
         return (V) Character.valueOf(String.valueOf(get(property.getName())).charAt(
             0));
       }
       if (Byte.class.equals(property.getType())) {
         return (V) Byte.valueOf((byte) getInt(property.getName()));
       }
       if (Short.class.equals(property.getType())) {
         return (V) Short.valueOf((short) getInt(property.getName()));
       }
       if (Float.class.equals(property.getType())) {
         return (V) Float.valueOf((float) getDouble(property.getName()));
       }
       if (BigInteger.class.equals(property.getType())) {
         return (V) new BigDecimal((String) get(property.getName())).toBigInteger();
       }
       if (BigDecimal.class.equals(property.getType())) {
         return (V) new BigDecimal((String) get(property.getName()));
       }
       if (Integer.class.equals(property.getType())) {
         return (V) Integer.valueOf(getInt(property.getName()));
       }
       if (Long.class.equals(property.getType())) {
         return (V) Long.valueOf((String) get(property.getName()));
       }
       if (Double.class.equals(property.getType())) {
         if (!isDefined(property.getName())) {
           return (V) new Double(0.0);
         }
         return (V) Double.valueOf(getDouble(property.getName()));
       }
       if (Date.class.equals(property.getType())) {
         double millis = new Date().getTime();
         if (isDefined(property.getName())) {
           millis = Double.parseDouble((String) get(property.getName()));
         }
         if (GWT.isScript()) {
           return (V) dateForDouble(millis);
         } else {
           // In dev mode, we're using real JRE dates
           return (V) new Date((long) millis);
         }
       }
     } catch (final Exception ex) {
       throw new IllegalStateException("Property  " + property.getName()
           + " has invalid " + " value " + get(property.getName())
           + " for type " + property.getType());
     }

     if (property instanceof EnumProperty) {
       EnumProperty<V> eProperty = (EnumProperty<V>) property;
       Enum<?>[] values = (Enum[]) eProperty.getValues();
       int ordinal = getInt(property.getName());
       for (Enum<?> value : values) {
         if (ordinal == value.ordinal()) {
           return (V) value;
         }
       }
     }

     if (String.class == property.getType()) {
       return (V) get(property.getName());
     }
     // at this point, we checked all the known primitive/value types we support
     // TODO: handle embedded types, List, Set, Map

     // else, it must be a record type
     String relatedId = (String) get(property.getName());
     if (relatedId == null) {
       return null;
     } else {
       // TODO: should cache this or modify JSO field in place
       String schemaAndId[] = relatedId.split("-");
       assert schemaAndId.length == 2;
       ProxySchema<?> schema = getRequestFactory().getSchema(schemaAndId[0]);
       return (V) getRequestFactory().getValueStore().getRecordBySchemaAndId(schema,
           Long.valueOf(schemaAndId[1]));
     }
   }

   public final native <T> T get(String propertyName) /*-{
     return this[propertyName] || null;
   }-*/;

   public final Long getId() {
     return this.get(id);
   }

   public final <V> PropertyReference<V> getRef(Property<V> property) {
     return new PropertyReference<V>(this, property);
   }

   public final native RequestFactoryJsonImpl getRequestFactory() /*-{
     return this['__rf'];
   }-*/;

   public final native ProxySchema<?> getSchema() /*-{
     return this['__key'];
   }-*/;

   public final Integer getVersion() {
     return this.get(version);
   }

   /**
    * @param name
    */
   public final native boolean isDefined(String name)/*-{
     return this[name] !== undefined;
   }-*/;

   public final boolean isEmpty() {
     for (Property<?> property : getSchema().allProperties()) {
       if ((property != EntityProxy.id) && (property != EntityProxy.version)
           && (isDefined(property.getName()))) {
         return false;
       }
     }
     return true;
   }

   /**
    * @param name
    */
   public final native boolean isNullOrUndefined(String name)/*-{
     return this[name] == null;
   }-*/;

   public final boolean merge(ProxyJsoImpl from) {
     assert getSchema() == from.getSchema();

     boolean changed = false;
     for (Property<?> property : getSchema().allProperties()) {
       if (from.isDefined(property.getName())) {
         changed |= copyPropertyIfDifferent(property.getName(), from);
       }
     }

     return changed;
   }

   public final <V> void set(Property<V> property, V value) {
     if (value == null) {
       setNull(property.getName());
       return;
     }

     if (value instanceof String) {
       setString(property.getName(), (String) value);
       return;
     }
     if (value instanceof Character) {
       setString(property.getName(), String.valueOf(value));
       return;
     }

     if (value instanceof Long || value instanceof BigDecimal
         || value instanceof BigInteger) {
       setString(property.getName(), String.valueOf(value));
       return;
     }

     if (value instanceof Integer || value instanceof Short
         || value instanceof Byte) {
       setInt(property.getName(), ((Number) value).intValue());
       return;
     }

     if (value instanceof Date) {
       long millis = ((Date) value).getTime();
       setString(property.getName(), String.valueOf(millis));
       return;
     }
     if (value instanceof Double || value instanceof Float) {
       setDouble(property.getName(), ((Number) value).doubleValue());
       return;
     }

     if (value instanceof Enum<?>) {
       setInt(property.getName(), ((Enum<?>) value).ordinal());
       return;
     }

     if (value instanceof Boolean) {
       setBoolean(property.getName(), ((Boolean) value).booleanValue());
       return;
     }

     if (value instanceof ProxyImpl) {
       setString(property.getName(), ((ProxyImpl) value).getUniqueId());
       return;
     }

     throw new UnsupportedOperationException("Cannot set properties of type "
         + value.getClass().getName());
   }

   /**
    * Return JSON representation using org.json library.
    *
    * @return returned string.
    */
   public final native String toJson() /*-{
     // Safari 4.0.5 appears not to honor the replacer argument, so we can't do this:

     //    var replacer = function(key, value) {
     //      if (key == '__key') {
     //        return;
     //      }
     //      return value;
     //    }
     // return $wnd.JSON.stringify(this, replacer);

     var key = this.__key;
     delete this.__key;
     var rf = this.__rf;
     delete this.__rf;
     var gwt = this.__gwt_ObjectId;
     delete this.__gwt_ObjectId;
     // TODO verify that the stringify() from json2.js works on IE
     var rtn = $wnd.JSON.stringify(this);
     this.__key = key;
     this.__rf = rf;
     this.__gwt_ObjectId = gwt;
     return rtn;
   }-*/;

   private native boolean copyPropertyIfDifferent(String name, ProxyJsoImpl from) /*-{
     if (this[name] == from[name]) {
       return false;
     }
     this[name] = from[name];
     return true;
   }-*/;

   private native Date dateForDouble(double millis) /*-{
     return @java.util.Date::createFrom(D)(millis);
   }-*/;

   private native boolean getBoolean(String name) /*-{
     return this[name];
   }-*/;

   private native double getDouble(String name) /*-{
     return this[name];
   }-*/;

   private native int getInt(String name) /*-{
     return this[name];
   }-*/;

   private native void setBoolean(String name, boolean value) /*-{
     this[name] = value;
   }-*/;

   private native void setDouble(String name, double value) /*-{
     this[name] = value;
   }-*/;

   private native void setInt(String name, int value) /*-{
     this[name] = value;
   }-*/;

   private native void setNull(String name) /*-{
     this[name] = null;
   }-*/;

   private final native void setRequestFactory(
       RequestFactoryJsonImpl requestFactory) /*-{
     this['__rf'] = requestFactory;
   }-*/;

   private final native void setSchema(ProxySchema<?> schema) /*-{
     this['__key'] = schema;
   }-*/;

   private native void setString(String name, String value) /*-{
     this[name] = value;
   }-*/;
 }
	/*
	* Copyright 2010 Google Inc.
	*
	* Licensed under the Apache License, Version 2.0 (the "License"); you may not
	* use this file except in compliance with the License. You may obtain a copy of
	* the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
	* License for the specific language governing permissions and limitations under
	* the License.
	*/
	package com.google.gwt.requestfactory.client.impl;

	import com.google.gwt.core.client.GWT;
	import com.google.gwt.core.client.JavaScriptObject;
	import com.google.gwt.core.client.JsArray;
	import com.google.gwt.requestfactory.shared.EntityProxy;
	import com.google.gwt.requestfactory.shared.EnumProperty;
	import com.google.gwt.requestfactory.shared.Property;
	import com.google.gwt.requestfactory.shared.PropertyReference;

	import java.math.BigDecimal;
	import java.math.BigInteger;
	import java.util.Date;

	/**
	* <p>
	* <span style="color:red">Experimental API: This class is still under rapid
	* development, and is very likely to be deleted. Use it at your own risk.
	* </span>
	* </p>
	* JSO implementation of {@link EntityProxy}, used to back subclasses of
	* {@link ProxyImpl}.
	*/
	public class ProxyJsoImpl extends JavaScriptObject implements EntityProxy {

	public static ProxyJsoImpl create(JavaScriptObject rawJsoWithIdAndVersion,
	ProxySchema<?> schema, RequestFactoryJsonImpl requestFactory) {

	ProxyJsoImpl rtn = rawJsoWithIdAndVersion.cast();
	assert rtn.getId() != null;
	assert rtn.getVersion() != null;

	rtn.setSchema(schema);
	rtn.setRequestFactory(requestFactory);
	return rtn;
	};

	public static JsArray<ProxyJsoImpl> create(
	JsArray<JavaScriptObject> rawJsos, ProxySchema<?> schema,
	RequestFactoryJsonImpl requestFactory) {

	for (int i = 0; i < rawJsos.length(); i++) {
	ProxyJsoImpl.create(rawJsos.get(i), schema, requestFactory);
	}

	return rawJsos.cast();
	}

	public static ProxyJsoImpl create(Long id, Integer version,
	ProxySchema<?> schema, RequestFactoryJsonImpl requestFactory) {
	ProxyJsoImpl rtn = createEmpty();
	rtn.set(EntityProxy.id, id);
	rtn.set(EntityProxy.version, version);
	return create(rtn, schema, requestFactory);
	}

	public static ProxyJsoImpl emptyCopy(ProxyJsoImpl jso) {
	Long id = jso.get(EntityProxy.id);
	Integer version = jso.get(EntityProxy.version);
	ProxySchema<?> schema = jso.getSchema();

	ProxyJsoImpl copy = create(id, version, schema, jso.getRequestFactory());
	return copy;
	}

	/**
	* Create an empty JSO, unsafe to return.
	*/
	private static native ProxyJsoImpl createEmpty() /*-{
	return {};
	}-*/;

	protected ProxyJsoImpl() {
	}

	public final native void delete(String name)/*-{
	delete this[name];
	}-*/;

	@SuppressWarnings("unchecked")
	public final <V> V get(Property<V> property) {
	if (isNullOrUndefined(property.getName())) {
	return null;
	}

	try {
	if (Boolean.class.equals(property.getType())) {
	return (V) Boolean.valueOf(getBoolean(property.getName()));
	}
	if (Character.class.equals(property.getType())) {
	return (V) Character.valueOf(String.valueOf(get(property.getName())).charAt(
	0));
	}
	if (Byte.class.equals(property.getType())) {
	return (V) Byte.valueOf((byte) getInt(property.getName()));
	}
	if (Short.class.equals(property.getType())) {
	return (V) Short.valueOf((short) getInt(property.getName()));
	}
	if (Float.class.equals(property.getType())) {
	return (V) Float.valueOf((float) getDouble(property.getName()));
	}
	if (BigInteger.class.equals(property.getType())) {
	return (V) new BigDecimal((String) get(property.getName())).toBigInteger();
	}
	if (BigDecimal.class.equals(property.getType())) {
	return (V) new BigDecimal((String) get(property.getName()));
	}
	if (Integer.class.equals(property.getType())) {
	return (V) Integer.valueOf(getInt(property.getName()));
	}
	if (Long.class.equals(property.getType())) {
	return (V) Long.valueOf((String) get(property.getName()));
	}
	if (Double.class.equals(property.getType())) {
	if (!isDefined(property.getName())) {
	return (V) new Double(0.0);
	}
	return (V) Double.valueOf(getDouble(property.getName()));
	}
	if (Date.class.equals(property.getType())) {
	double millis = new Date().getTime();
	if (isDefined(property.getName())) {
	millis = Double.parseDouble((String) get(property.getName()));
	}
	if (GWT.isScript()) {
	return (V) dateForDouble(millis);
	} else {
	// In dev mode, we're using real JRE dates
	return (V) new Date((long) millis);
	}
	}
	} catch (final Exception ex) {
	throw new IllegalStateException("Property " + property.getName()
	+ " has invalid " + " value " + get(property.getName())
	+ " for type " + property.getType());
	}

	if (property instanceof EnumProperty) {
	EnumProperty<V> eProperty = (EnumProperty<V>) property;
	Enum<?>[] values = (Enum[]) eProperty.getValues();
	int ordinal = getInt(property.getName());
	for (Enum<?> value : values) {
	if (ordinal == value.ordinal()) {
	return (V) value;
	}
	}
	}

	if (String.class == property.getType()) {
	return (V) get(property.getName());
	}
	// at this point, we checked all the known primitive/value types we support
	// TODO: handle embedded types, List, Set, Map

	// else, it must be a record type
	String relatedId = (String) get(property.getName());
	if (relatedId == null) {
	return null;
	} else {
	// TODO: should cache this or modify JSO field in place
	String schemaAndId[] = relatedId.split("-");
	assert schemaAndId.length == 2;
	ProxySchema<?> schema = getRequestFactory().getSchema(schemaAndId[0]);
	return (V) getRequestFactory().getValueStore().getRecordBySchemaAndId(schema,
	Long.valueOf(schemaAndId[1]));
	}
	}

	public final native <T> T get(String propertyName) /*-{
	return this[propertyName] \|\| null;
	}-*/;

	public final Long getId() {
	return this.get(id);
	}

	public final <V> PropertyReference<V> getRef(Property<V> property) {
	return new PropertyReference<V>(this, property);
	}

	public final native RequestFactoryJsonImpl getRequestFactory() /*-{
	return this['__rf'];
	}-*/;

	public final native ProxySchema<?> getSchema() /*-{
	return this['__key'];
	}-*/;

	public final Integer getVersion() {
	return this.get(version);
	}

	/**
	* @param name
	*/
	public final native boolean isDefined(String name)/*-{
	return this[name] !== undefined;
	}-*/;

	public final boolean isEmpty() {
	for (Property<?> property : getSchema().allProperties()) {
	if ((property != EntityProxy.id) && (property != EntityProxy.version)
	&& (isDefined(property.getName()))) {
	return false;
	}
	}
	return true;
	}

	/**
	* @param name
	*/
	public final native boolean isNullOrUndefined(String name)/*-{
	return this[name] == null;
	}-*/;

	public final boolean merge(ProxyJsoImpl from) {
	assert getSchema() == from.getSchema();

	boolean changed = false;
	for (Property<?> property : getSchema().allProperties()) {
	if (from.isDefined(property.getName())) {
	changed \|= copyPropertyIfDifferent(property.getName(), from);
	}
	}

	return changed;
	}

	public final <V> void set(Property<V> property, V value) {
	if (value == null) {
	setNull(property.getName());
	return;
	}

	if (value instanceof String) {
	setString(property.getName(), (String) value);
	return;
	}
	if (value instanceof Character) {
	setString(property.getName(), String.valueOf(value));
	return;
	}

	if (value instanceof Long \|\| value instanceof BigDecimal
	\|\| value instanceof BigInteger) {
	setString(property.getName(), String.valueOf(value));
	return;
	}

	if (value instanceof Integer \|\| value instanceof Short
	\|\| value instanceof Byte) {
	setInt(property.getName(), ((Number) value).intValue());
	return;
	}

	if (value instanceof Date) {
	long millis = ((Date) value).getTime();
	setString(property.getName(), String.valueOf(millis));
	return;
	}
	if (value instanceof Double \|\| value instanceof Float) {
	setDouble(property.getName(), ((Number) value).doubleValue());
	return;
	}

	if (value instanceof Enum<?>) {
	setInt(property.getName(), ((Enum<?>) value).ordinal());
	return;
	}

	if (value instanceof Boolean) {
	setBoolean(property.getName(), ((Boolean) value).booleanValue());
	return;
	}

	if (value instanceof ProxyImpl) {
	setString(property.getName(), ((ProxyImpl) value).getUniqueId());
	return;
	}

	throw new UnsupportedOperationException("Cannot set properties of type "
	+ value.getClass().getName());
	}

	/**
	* Return JSON representation using org.json library.
	*
	* @return returned string.
	*/
	public final native String toJson() /*-{
	// Safari 4.0.5 appears not to honor the replacer argument, so we can't do this:

	// var replacer = function(key, value) {
	// if (key == '__key') {
	// return;
	// }
	// return value;
	// }
	// return $wnd.JSON.stringify(this, replacer);

	var key = this.__key;
	delete this.__key;
	var rf = this.__rf;
	delete this.__rf;
	var gwt = this.__gwt_ObjectId;
	delete this.__gwt_ObjectId;
	// TODO verify that the stringify() from json2.js works on IE
	var rtn = $wnd.JSON.stringify(this);
	this.__key = key;
	this.__rf = rf;
	this.__gwt_ObjectId = gwt;
	return rtn;
	}-*/;

	private native boolean copyPropertyIfDifferent(String name, ProxyJsoImpl from) /*-{
	if (this[name] == from[name]) {
	return false;
	}
	this[name] = from[name];
	return true;
	}-*/;

	private native Date dateForDouble(double millis) /*-{
	return @java.util.Date::createFrom(D)(millis);
	}-*/;

	private native boolean getBoolean(String name) /*-{
	return this[name];
	}-*/;

	private native double getDouble(String name) /*-{
	return this[name];
	}-*/;

	private native int getInt(String name) /*-{
	return this[name];
	}-*/;

	private native void setBoolean(String name, boolean value) /*-{
	this[name] = value;
	}-*/;

	private native void setDouble(String name, double value) /*-{
	this[name] = value;
	}-*/;

	private native void setInt(String name, int value) /*-{
	this[name] = value;
	}-*/;

	private native void setNull(String name) /*-{
	this[name] = null;
	}-*/;

	private final native void setRequestFactory(
	RequestFactoryJsonImpl requestFactory) /*-{
	this['__rf'] = requestFactory;
	}-*/;

	private final native void setSchema(ProxySchema<?> schema) /*-{
	this['__key'] = schema;
	}-*/;

	private native void setString(String name, String value) /*-{
	this[name] = value;
	}-*/;
	}