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Object Automation library
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/*  Copyright 1999 Vince Via [email protected]
    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.viaoa.object;

import java.util.*;
import java.util.logging.*;

import com.viaoa.hub.*;
import com.viaoa.util.*;


/**
 * Used to perform JSON read/write for OAObjects.
 * @author vincevia  2012/01/20
 */
public class OAObjectJsonDelegate {

	private static Logger LOG = Logger.getLogger(OAObjectJsonDelegate.class.getName());
	
    /**
	    Called by OAJsonWriter to save object as JSON.  All ONE, MANY2MANY, and MANY w/o reverse getMethod References
	    will store reference Ids, using the name of reference property as the tag.

	    Note: if a property's value is null, then it will not be included.
	    see #read
	*/
    public static void write(OAObject oaObj, OAJsonWriter ow, boolean bKeyOnly, OACascade cascade) {
        ow.println("{");
        ow.indent++;
        //ow.indent();
        _write(oaObj, ow, bKeyOnly, cascade);
        ow.println("");
        ow.indent--;
        ow.indent();
        ow.print("}");
    }
	private static void _write(OAObject oaObj, OAJsonWriter ow, boolean bKeyOnly, OACascade cascade) {
	    if (oaObj == null || ow == null) return;
	    Class c = oaObj.getClass();
	    OAObjectInfo oi = OAObjectInfoDelegate.getOAObjectInfo(oaObj);
	
	    if (cascade.wasCascaded(oaObj, true)) bKeyOnly = true;

        String s = "\"guid\": \""+OAObjectDelegate.getGuid(oaObj)+"\"";
        // ow.print(s);
        ow.writing(oaObj);  // hook to let oaJsonwriter subclass know when objects are being written
	    
        int writeCnt = 0;
	    ArrayList alProp = oi.getPropertyInfos();  // regular props, not link props
	    for (int i=0; i < alProp.size(); i++) {
	    	OAPropertyInfo pi = (OAPropertyInfo) alProp.get(i);
	        if (bKeyOnly && !pi.getId()) continue;
	        
	        String propName = OAString.mfcl(pi.getName());
	        Object value = OAObjectReflectDelegate.getProperty(oaObj, propName);
	        // if (value == null) continue;
	
            boolean x = ow.shouldIncludeProperty(oaObj, propName, value, pi, null);
            if (!x) continue;
	        
	        
	        if (value != null && OAConverter.getConverter(value.getClass()) == null && !(value instanceof String)) {
	            if (value instanceof OAObject) {
	                if (writeCnt++ > 0) ow.println(", ");
	                ow.indent();
	                ow.print("\"" + propName + "\": ");
	                write(((OAObject)value), ow, false, cascade);
	                continue;
	            }
	            value = ow.convertToString(propName, value);
	            // if (value == null) continue;

	            if (writeCnt++ > 0) ow.println(", "); 
                ow.indent();
	            if (value == null) ow.print("\"" + propName + "\": null");
	            else ow.print("\"" + propName + "\": \""+value+"\"");
	        }
	        else {
	            if (writeCnt++ > 0) ow.println(", "); 
                ow.indent();
	            ow.print("\"" + propName + "\": ");
	        }
	        
	        if (value == null) {
                ow.print("null"); 
	        }
	        else if (value instanceof String) {
	            value = OAString.convert((String)value, "\"", "\\\"");
                ow.print("\""); 
                ow.printJson((String)value);
                ow.print("\""); 
	        }
	        else if (value instanceof OADate) ow.print("\""+((OADate)value).toString("yyyy-MM-dd")+"\"");
	        else if (value instanceof OATime) ow.print("\""+((OATime)value).toString("HH:mm:ss")+"\"");
	        else if (value instanceof OADateTime) ow.print("\""+((OADateTime)value).toString("yyyy-MM-dd'T'HH:mm:ss")+"\"");
	        else {
	            value = OAConv.toString(value);
                value = OAString.convert((String)value, "\"", "\\\"");
                ow.print("\""); 
                ow.printJson((String)value);
                ow.print("\""); 
	        }
	    }
	    if (bKeyOnly) return;
	    
	    // Save link properties
	    List alLink = oi.getLinkInfos();
	    for (int i=0; i 0) ow.println(", ");
                            ow.indent();
        	                ow.println("\""+OAString.mfcl(li.getName())+"\": ");
        	                ow.indent++;
        	                ow.indent();
        	                write(((OAObject)obj), ow, false, cascade);
                            ow.indent--;
        	            }
        	            else if (obj instanceof Hub) {
        	                Hub h = (Hub) obj;
        	                if (writeCnt++ > 0) ow.println(", "); 
                            ow.indent();
                            ow.println("\""+OAString.mfcl(li.getName())+"\": ");
                            ow.indent();
                            HubJsonDelegate.write(h, ow, cascade);
        	            }
    	            }
    	            finally {
                        ow.popReference();
    	            }
    	        }
	    }
	}
	

    private static boolean isObjectKey(String propertyName, String[] propIds) {
        if (propertyName == null || propIds == null) return false;
        for (int i=0; i < propIds.length; i++) {
            if (propertyName.equalsIgnoreCase(propIds[i])) return true;
        }
        return false;
    }

}