com.viaoa.hub.HubDataMaster Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of oa-core Show documentation
Object Automation library
The newest version!
/*  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.hub;

import java.lang.reflect.Method;

import com.viaoa.datasource.OADataSource;
import com.viaoa.object.OALinkInfo;
import com.viaoa.object.OAObject;
import com.viaoa.object.OAObjectInfoDelegate;

/**
 * Internally used by Hub that is used to know the owner object of this Hub. The owner is the object that was used to get this Hub. If this
 * Hub was created by using getDetail(), then the MasterHub is set. When creating a shared Hub, this object will also be used for shared
 * Hub.
 * 
 * Example: a Hub of Employee Objects can "come" from a Department Object by calling department.getEmployees() method. For this, the
 * masterObject for the employee Hub will be set to the Department Object.
 */
class HubDataMaster implements java.io.Serializable {
	static final long serialVersionUID = 2L; // used for object serialization

	/** Only used for a Detail Hub, created by Hub.getDetail() */
	private transient volatile Hub masterHub;

	/** The object that Hub "belongs" to. */
	private transient volatile OAObject masterObject;

	public Hub getMasterHub() {
		return this.masterHub;
	}

	public void setMasterHub(Hub h) {
		this.masterHub = h;
	}

	public void setMasterObject(OAObject obj) {
		this.masterObject = obj;
	}

	public OAObject getMasterObject() {
		return this.masterObject;
	}

	/** LinkInfo from Detail (MANY) to Master (ONE). */
	protected transient volatile OALinkInfo liDetailToMaster;

	public OALinkInfo getDetailToMasterLinkInfo() {
		return liDetailToMaster;
	}

	public String getUniqueProperty() {
		if (liDetailToMaster == null) {
			return null;
		}
		OALinkInfo rli = OAObjectInfoDelegate.getReverseLinkInfo(liDetailToMaster);
		if (rli == null) {
			return null;
		}
		return rli.getUniqueProperty();
	}

	public Method getUniquePropertyGetMethod() {
		if (liDetailToMaster == null) {
			return null;
		}
		OALinkInfo rli = OAObjectInfoDelegate.getReverseLinkInfo(liDetailToMaster);
		if (rli == null) {
			return null;
		}
		return rli.getUniquePropertyGetMethod();
	}

	/**
	 * True if there is a masterObject and it is not a calculated Hub.
	 */
	public boolean getTrackChanges() {
		if (masterObject == null) {
			return false;
		}

		// 20160505 change to false.  ex: ServerRoot.hubUsers (calc/merged)
		if (liDetailToMaster == null) {
			return false;
		}
		//was:  if (liDetailToMaster == null) return true;

		if (liDetailToMaster.getCalculated()) {
			return false;
		}

		// 20160623 so that serverRoot wont store changes to objects
		if (!liDetailToMaster.getToObjectInfo().getUseDataSource() && OADataSource.getDataSource(liDetailToMaster.getToClass()) == null) {
			return false;
		}

		// 20160505 check to see if rev li is calc.
		OALinkInfo liRev = liDetailToMaster.getReverseLinkInfo();
		if (liRev != null && liRev.getCalculated()) {
			return false;
		}

		return true;
	}

	public String getSortProperty() {
		if (liDetailToMaster == null) {
			return null;
		}
		OALinkInfo rli = OAObjectInfoDelegate.getReverseLinkInfo(liDetailToMaster);
		if (rli == null) {
			return null;
		}
		return rli.getSortProperty();
	}

	public boolean isSortAsc() {
		if (liDetailToMaster == null) {
			return false;
		}
		OALinkInfo rli = OAObjectInfoDelegate.getReverseLinkInfo(liDetailToMaster);
		if (rli == null) {
			return false;
		}
		return rli.isSortAsc();
	}

	public String getSeqProperty() {
		if (liDetailToMaster == null) {
			return null;
		}
		OALinkInfo rli = OAObjectInfoDelegate.getReverseLinkInfo(liDetailToMaster);
		if (rli == null) {
			return null;
		}
		return rli.getSeqProperty();
	}

	// 20141125 custom writer so that linkInfo is not written, and so masterObject can use key instead
	// 201607 dont need to write masterobject or linkinfo
	//    OAObjectPropertyDelegate.setProperty will do this
	private void writeObject(java.io.ObjectOutputStream s) throws java.io.IOException {
		s.defaultWriteObject();
		s.writeByte(0);
	}

	private void readObject(java.io.ObjectInputStream s) throws java.io.IOException, ClassNotFoundException {
		s.defaultReadObject();
		byte bx = s.readByte();
	}
}