user/src/com/google/gwt/requestfactory/client/impl/RecordJsoImpl.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.valuestore.shared.EnumProperty;
 import com.google.gwt.valuestore.shared.Property;
 import com.google.gwt.valuestore.shared.PropertyReference;
 import com.google.gwt.valuestore.shared.Record;

 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 Record}, used to back subclasses of
  * {@link RecordImpl}.
  */
 public class RecordJsoImpl extends JavaScriptObject implements Record {

   /**
    * JSO to hold result and related objects.
    */
   public static class JsonResults extends JavaScriptObject {

     protected JsonResults() {
     }

     public final native JsArray<RecordJsoImpl> getListResult() /*-{
       return this.result;
     }-*/;

     public final native RecordJsoImpl getRecordResult() /*-{
       return this.result;
     }-*/;

     public final native JavaScriptObject getRelated() /*-{
       return this.related;
     }-*/;

     public final native Object getResult() /*-{
       return Object(this.result);
     }-*/;

     public final native JavaScriptObject getSideEffects() /*-{
       return this.sideEffects;
     }-*/;
   }

   public static native JsArray<RecordJsoImpl> arrayFromJson(String json) /*-{
     return eval(json);
   }-*/;

   public static RecordJsoImpl create(Long id, Integer version,
       final RecordSchema<?> schema) {
     RecordJsoImpl copy = create();
     copy.setSchema(schema);
     copy.set(Record.id, id);
     copy.set(Record.version, version);
     return copy;
   }

   public static RecordJsoImpl emptyCopy(RecordJsoImpl jso) {
     Long id = jso.get(Record.id);
     Integer version = jso.get(Record.version);
     final RecordSchema<?> schema = jso.getSchema();

     RecordJsoImpl copy = create(id, version, schema);
     copy.setRequestFactory(jso.getRequestFactory());
     copy.setValueStore(jso.getValueStore());
     return copy;
   }

   public static native RecordJsoImpl fromJson(String json) /*-{
     // TODO: clean this
     eval("xyz=" + json);
     return xyz;
   }-*/;

   public static native JsonResults fromResults(String json) /*-{
     // TODO: clean this
     eval("xyz=" + json);
     return xyz;
   }-*/;

   /* Made protected, for testing */

   protected static native RecordJsoImpl create() /*-{
     return {};
   }-*/;

   protected RecordJsoImpl() {
   }

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

   @SuppressWarnings("unchecked")
   public final <V> V get(Property<V> property) {
     // TODO lax for the moment b/c client code can't yet reasonably make the
     // request
     // assert isDefined(property.getName()) :
     // "Cannot ask for a property before setting it: "
     // + property.getName();
     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("-");
       return (V) getValueStore().getRecordBySchemaAndId(
           getRequestFactory().getSchema(schemaAndId[0]),
           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);
   }

   // TODO: HACK! Need to look up token to schema for relatins
   public final native RequestFactoryJsonImpl getRequestFactory() /*-{
     return this['__rf'];
   }-*/;

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

   // TODO: HACK! Make VS public and stash it in the record for relation lookups
   public final native ValueStoreJsonImpl getValueStore() /*-{
      return this['__vs'];
   }-*/;

   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 != Record.id) && (property != Record.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(RecordJsoImpl 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 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());
     }

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

     throw new UnsupportedOperationException(
         "Can't yet set properties of type " + value.getClass().getName());
   }

   // TODO: HACK! Need to look up token to schema for relatins
   public final native void setRequestFactory(RequestFactoryJsonImpl requestFactory) /*-{
     this['__rf'] = requestFactory;
   }-*/;

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

   // TODO: HACK! Make VS public and stash it in the record for relation lookups

   public final native void setValueStore(ValueStoreJsonImpl valueStoreJson) /*-{
     this['__vs']=valueStoreJson;
   }-*/;

   /**
    * 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 vs = this.__vs;
     delete this.__vs;
     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.__vs = vs;
     this.__gwt_ObjectId = gwt;
     return rtn;
   }-*/;

   /**
    * Return JSON representation of just id and version fields, using org.json
    * library.
    *
    * @return returned string.
    */
   public final native String toJsonIdVersion() /*-{
     // Safari 4.0.5 appears not to honor the replacer argument, so we can't do this:
     //    var replacer = function(key, value) {
     //      if (key == 'id' || key == 'version') {
     //        return value;
     //      }
     //      return;
     //    }
     //    return $wnd.JSON.stringify(this, replacer);
     var object = { id: this.id, version: this.version };
     return $wnd.JSON.stringify(object);
   }-*/;

   private native boolean copyPropertyIfDifferent(String name,
       RecordJsoImpl 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 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.valuestore.shared.EnumProperty;
	import com.google.gwt.valuestore.shared.Property;
	import com.google.gwt.valuestore.shared.PropertyReference;
	import com.google.gwt.valuestore.shared.Record;

	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 Record}, used to back subclasses of
	* {@link RecordImpl}.
	*/
	public class RecordJsoImpl extends JavaScriptObject implements Record {

	/**
	* JSO to hold result and related objects.
	*/
	public static class JsonResults extends JavaScriptObject {

	protected JsonResults() {
	}

	public final native JsArray<RecordJsoImpl> getListResult() /*-{
	return this.result;
	}-*/;

	public final native RecordJsoImpl getRecordResult() /*-{
	return this.result;
	}-*/;

	public final native JavaScriptObject getRelated() /*-{
	return this.related;
	}-*/;

	public final native Object getResult() /*-{
	return Object(this.result);
	}-*/;

	public final native JavaScriptObject getSideEffects() /*-{
	return this.sideEffects;
	}-*/;
	}

	public static native JsArray<RecordJsoImpl> arrayFromJson(String json) /*-{
	return eval(json);
	}-*/;

	public static RecordJsoImpl create(Long id, Integer version,
	final RecordSchema<?> schema) {
	RecordJsoImpl copy = create();
	copy.setSchema(schema);
	copy.set(Record.id, id);
	copy.set(Record.version, version);
	return copy;
	}

	public static RecordJsoImpl emptyCopy(RecordJsoImpl jso) {
	Long id = jso.get(Record.id);
	Integer version = jso.get(Record.version);
	final RecordSchema<?> schema = jso.getSchema();

	RecordJsoImpl copy = create(id, version, schema);
	copy.setRequestFactory(jso.getRequestFactory());
	copy.setValueStore(jso.getValueStore());
	return copy;
	}

	public static native RecordJsoImpl fromJson(String json) /*-{
	// TODO: clean this
	eval("xyz=" + json);
	return xyz;
	}-*/;

	public static native JsonResults fromResults(String json) /*-{
	// TODO: clean this
	eval("xyz=" + json);
	return xyz;
	}-*/;

	/* Made protected, for testing */

	protected static native RecordJsoImpl create() /*-{
	return {};
	}-*/;

	protected RecordJsoImpl() {
	}

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

	@SuppressWarnings("unchecked")
	public final <V> V get(Property<V> property) {
	// TODO lax for the moment b/c client code can't yet reasonably make the
	// request
	// assert isDefined(property.getName()) :
	// "Cannot ask for a property before setting it: "
	// + property.getName();
	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("-");
	return (V) getValueStore().getRecordBySchemaAndId(
	getRequestFactory().getSchema(schemaAndId[0]),
	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);
	}

	// TODO: HACK! Need to look up token to schema for relatins
	public final native RequestFactoryJsonImpl getRequestFactory() /*-{
	return this['__rf'];
	}-*/;

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

	// TODO: HACK! Make VS public and stash it in the record for relation lookups
	public final native ValueStoreJsonImpl getValueStore() /*-{
	return this['__vs'];
	}-*/;

	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 != Record.id) && (property != Record.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(RecordJsoImpl 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 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());
	}

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

	throw new UnsupportedOperationException(
	"Can't yet set properties of type " + value.getClass().getName());
	}

	// TODO: HACK! Need to look up token to schema for relatins
	public final native void setRequestFactory(RequestFactoryJsonImpl requestFactory) /*-{
	this['__rf'] = requestFactory;
	}-*/;

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

	// TODO: HACK! Make VS public and stash it in the record for relation lookups

	public final native void setValueStore(ValueStoreJsonImpl valueStoreJson) /*-{
	this['__vs']=valueStoreJson;
	}-*/;

	/**
	* 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 vs = this.__vs;
	delete this.__vs;
	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.__vs = vs;
	this.__gwt_ObjectId = gwt;
	return rtn;
	}-*/;

	/**
	* Return JSON representation of just id and version fields, using org.json
	* library.
	*
	* @return returned string.
	*/
	public final native String toJsonIdVersion() /*-{
	// Safari 4.0.5 appears not to honor the replacer argument, so we can't do this:
	// var replacer = function(key, value) {
	// if (key == 'id' \|\| key == 'version') {
	// return value;
	// }
	// return;
	// }
	// return $wnd.JSON.stringify(this, replacer);
	var object = { id: this.id, version: this.version };
	return $wnd.JSON.stringify(object);
	}-*/;

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