com.viaoa.object.OAObjectImportMatchDelegate Maven / Gradle / Ivy
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package com.viaoa.object;
import java.util.ArrayList;
import java.util.List;
import com.viaoa.datasource.OASelect;
import com.viaoa.filter.OAQueryFilter;
import com.viaoa.hub.Hub;
import com.viaoa.json.OAJson;
import com.viaoa.util.OAArray;
import com.viaoa.util.OAPropertyPath;
import com.viaoa.util.OAString;
/**
* Find (or create) OAObject based on values from import matches.
*
* This is mostly used by POJO classes (which could be generated by OABuilder) that are created and used for JSON, that dont have the pkey
* property for the class (ex: autoSeq Id prop). Instead, there are properties or links that are importMatches that can be used to find the
* matching object.
*
* The "trick" is that there could be multiple importMatches (properties or links), and it is not totally unique by itself, but requires
* matching other values, and following rules in linked references.
* If the importMatch is a link, it could have a hierarchy of links (recursive).
* If not found, this will create the object and it's (optional) hierarchy of links that would then satisfy the rules for the importMatch
* and other relationship (link) requirements.
*
*
* @author vvia
*/
public class OAObjectImportMatchDelegate {
public static class ImportMatch {
public OAObject fromObject;
public OALinkInfo liTo;
public final List importMatchDetails = new ArrayList<>();
// if liTo.object is owned, then this is the owner
public ImportMatchDetail ownerDetail;
}
public static class ImportMatchDetail {
public String propertyName; // used in pojo
public Object value;
public String propertyPath;
}
/**
* Used when importing (pojo Json) that only uses ImportMatches (does not have pkey property). This will find the correct object, or
* create and populate it.
*
* @param oaObjFrom object that has references based on importMatch value (not f/pkey)
* @param liTo object to find using import match.
* @param mapNameValue name(s)/value(s) for importMatch properties
*/
public static void process(final ImportMatch importMatch) {
if (importMatch == null) {
return;
}
if (importMatch.fromObject == null || importMatch.liTo == null) {
return;
}
// check to see if the importMatch is null
for (ImportMatchDetail imd : importMatch.importMatchDetails) {
if (imd.value == null) {
importMatch.fromObject.setProperty(importMatch.liTo.getName(), null);
return;
}
}
OAObject obj = (OAObject) importMatch.liTo.getValue(importMatch.fromObject);
if (obj != null) {
return; // already exists
}
final OAObjectInfo oi = OAObjectInfoDelegate.getOAObjectInfo(importMatch.fromObject);
String sql = "";
Object[] params = new Object[] {};
for (ImportMatchDetail imd : importMatch.importMatchDetails) {
if (OAString.isNotEmpty(sql)) {
sql += " AND ";
}
sql += imd.propertyPath + " = ?";
params = OAArray.add(Object.class, params, imd.value);
}
// check to see if there is an Owner for liTo
OALinkInfo liToOwner = null;
for (OALinkInfo li : importMatch.liTo.getToObjectInfo().getLinkInfos()) {
if (li.getType() != OALinkInfo.TYPE_ONE) {
continue;
}
OALinkInfo rli = li.getReverseLinkInfo();
if (rli.getType() != OALinkInfo.TYPE_MANY) {
continue;
}
if (rli.getOwner()) {
liToOwner = li;
break;
}
}
OAObject objOwner = null; // owner of importMatch.liTo
// this will add additional matching based on the link rules (ex: equalPropertyPath)
final OAObjectInfo oiTo = importMatch.liTo.getToObjectInfo();
final String[] importMatchPropertyNames = oiTo.getImportMatchPropertyNames();
boolean bWasSearched = false;
if (importMatchPropertyNames != null && importMatchPropertyNames.length > 0) {
String ppFromObjectEqual = importMatch.liTo.getReverseLinkInfo().getEqualPropertyPath();
String ppToObjectEqual = importMatch.liTo.getEqualPropertyPath();
if (OAString.isNotEmpty(ppFromObjectEqual) && OAString.isNotEmpty(ppToObjectEqual)) {
Object val = importMatch.fromObject.getProperty(ppFromObjectEqual);
if (OAString.isNotEmpty(sql)) {
sql += " AND ";
}
sql += ppToObjectEqual + " = ?";
params = OAArray.add(params, val);
if (liToOwner != null && val instanceof OAObject) {
OAPropertyPath ppx = new OAPropertyPath(importMatch.liTo.getToClass(), ppToObjectEqual);
if (liToOwner == ppx.getEndLinkInfo() && ppx.getLinkInfos().length == 1) {
objOwner = (OAObject) val;
}
}
OALinkInfo li = oiTo.getLinkInfo(ppToObjectEqual);
if (li != null) {
OALinkInfo rli = li.getReverseLinkInfo();
Object objx = rli.getValue(val);
if (objx instanceof Hub) {
Hub hub = (Hub) objx;
OAFinder finder = new OAFinder();
OAQueryFilter filter = new OAQueryFilter(oiTo.getForClass(), sql, params);
finder.addFilter(filter);
obj = finder.findFirst(hub);
bWasSearched = true;
} else if (objx instanceof OAObject) {
OAObject oaobj = (OAObject) objx;
OAFinder finder = new OAFinder();
OAQueryFilter filter = new OAQueryFilter(oiTo.getForClass(), sql, params);
finder.addFilter(filter);
obj = finder.findFirst(oaobj);
bWasSearched = true;
}
}
}
}
if (!bWasSearched) {
OASelect sel = new OASelect(importMatch.liTo.getToClass(), sql, params, "");
obj = sel.next();
sel.close();
if (obj == null) {
OAFinder finder = new OAFinder();
OAQueryFilter filter = new OAQueryFilter(importMatch.liTo.getToClass(), sql, params);
finder.addFilter(filter);
obj = (OAObject) OAObjectCacheDelegate.find(importMatch.liTo.getToClass(), finder);
}
}
if (obj == null) {
obj = (OAObject) OAObjectReflectDelegate.createNewObject(importMatch.liTo.getToClass());
for (ImportMatchDetail detail : importMatch.importMatchDetails) {
createHierObjects(obj, OAObjectInfoDelegate.getOAObjectInfo(obj), detail.propertyPath, detail.value);
}
if (objOwner != null) {
obj.setProperty(liToOwner.getName(), objOwner);
}
}
importMatch.fromObject.setProperty(importMatch.liTo.getName(), obj);
}
protected static void createHierObjects(final OAObject objThis, final OAObjectInfo oiThis, final String propertyPath,
final Object value) {
OAPropertyPath pp = new OAPropertyPath(oiThis.getForClass(), propertyPath);
OALinkInfo[] linkInfos = pp.getLinkInfos();
if (linkInfos == null || linkInfos.length == 0) {
objThis.setProperty(pp.getEndPropertyInfo().getName(), value);
return;
}
final OALinkInfo liNext = linkInfos[0];
final OAObjectInfo oiNext = liNext.getToObjectInfo();
final String propertyPathNext = OAString.field(propertyPath, '.', 2, 999);
final String sql = propertyPathNext + " = ?";
final Object[] params = new Object[] { value };
OASelect sel = new OASelect(oiNext.getForClass(), propertyPathNext + " = ?", params, "");
sel.select();
OAObject objNext = sel.next();
sel.close();
if (objNext == null) {
OAFinder finder = new OAFinder();
OAQueryFilter filter = new OAQueryFilter(oiNext.getForClass(), sql, params);
finder.addFilter(filter);
objNext = (OAObject) OAObjectCacheDelegate.find(oiNext.getForClass(), finder);
}
if (objNext == null) {
boolean b = OAThreadLocalDelegate.isLoading();
if (b) {
OAThreadLocalDelegate.setLoading(false);
}
objNext = (OAObject) OAObjectReflectDelegate.createNewObject(oiNext.getForClass());
if (b) {
OAThreadLocalDelegate.setLoading(true);
}
final OAJson oaj = OAThreadLocalDelegate.getOAJackson();
createHierObjects(objNext, oiNext, propertyPathNext, value);
}
objThis.setProperty(liNext.getName(), objNext);
}
}