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// Portions Copyright [2019] [Payara Foundation and/or its affiliates]
package com.sun.jdo.api.persistence.mapping.ejb;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import org.netbeans.modules.schema2beans.BaseBean;
import org.netbeans.modules.schema2beans.GraphManager;
import org.netbeans.modules.schema2beans.BaseProperty;
import com.sun.jdo.api.persistence.mapping.ejb.beans.*;
/** Finder utilities for elements of the SunCmpMappings
* object graph.
* @author vkraemer
*/
public class SunCmpMappingsUtils {
private static ResourceBundle bundle =
ResourceBundle.getBundle("com.sun.jdo.api.persistence.mapping.ejb.Bundle"); //NOI18N
/** Creates a new instance of SunCmpMappingsUtils */
private SunCmpMappingsUtils() {
}
/** Return the first SunCmpMapping element from the graph.
* @param scms The root of a SunCmpMappings object graph
* @param addEmpty flag to add an empty version of the SunCmpMapping element to the graph if one is
* not found.
* @return The first SunCmpMapping element in the graph or null if it doesn't exists and
* addEmpty is false.
*/
public static SunCmpMapping getFirstSunCmpMapping(SunCmpMappings scms, boolean addEmpty) {
SunCmpMapping retVal = null;
if (0 < scms.sizeSunCmpMapping())
retVal = scms.getSunCmpMapping(0);
if ((null == retVal) && addEmpty) {
retVal = new SunCmpMapping();
scms.addSunCmpMapping(retVal);
}
return retVal;
}
/** Find the EntityMapping element that correspond to a bean.
* @return the EntityMapping element, or null if addEmpty is false and the EntityMapping is not
* found.
* @param scms the root of the SunCmpMappings graph
* @param bname The value of the ejb-name element for a bean in the graph
* @param addEmpty flag to add an empty version of the EntityMapping element to the graph if one is
* not found.
* @throws IllegalArgumentException if more than one EntityMapping element has an ejb-name element with the matching
* value
*/
public static EntityMapping findEntityMapping(SunCmpMappings scms, String bname, boolean addEmpty) throws IllegalArgumentException {
EntityMapping retVal = (EntityMapping) findSingleCompatibleBean(
"scms", scms, "bname", bname, "ejb-name", EntityMapping.class); // NOI18N
if ((null == retVal) && addEmpty) {
retVal = new EntityMapping();
retVal.setEjbName(bname);
SunCmpMapping scm = getFirstSunCmpMapping(scms, addEmpty);
scm.addEntityMapping(retVal);
}
return retVal;
}
/** Find the cmr-field-mapping element for a field in an EntityMapping object
* @return the CmrFieldMapping element or null if addEmpty is false and the field is not
* found.
* @param em The root of the search
* @param fname the name of the field
* @param addEmpty flag to add an empty version of the CmrFieldMapping element to the graph if one is
* not found.
* @throws IllegalArgumentException If there is more than one cmr-field with a matching cmr-field-name element in
* the EntityMapping graph.
*/
public static CmrFieldMapping findCmrFieldMapping(EntityMapping em, String fname, boolean addEmpty) throws IllegalArgumentException {
CmrFieldMapping retVal = (CmrFieldMapping) findSingleCompatibleBean(
"em", em, "fname", fname, "cmr-field-name", CmrFieldMapping.class); // NOI18N
if ((null == retVal) && addEmpty) {
retVal = new CmrFieldMapping();
retVal.setCmrFieldName(fname);
em.addCmrFieldMapping(retVal);
}
return retVal;
}
/** Find the CmpFieldMapping element with a matching field-name element value
* @return The CmpFieldMapping element or null if addEmpty is false and the field is not
* found.
* @param em the root of the search
* @param fname the value of the field-name element
* @param addEmpty flag to add an empty version of the CmpFieldMapping element to the graph if one is
* not found.
* @throws IllegalArgumentException If there is more than one cmp-field with a matching field-name element in
* the EntityMapping graph.
*/
public static CmpFieldMapping findCmpFieldMapping(EntityMapping em, String fname, boolean addEmpty) throws IllegalArgumentException {
CmpFieldMapping retVal = (CmpFieldMapping) findSingleCompatibleBean(
"em", em, "fname", fname, "field-name", CmpFieldMapping.class); // NOI18N
if ((null == retVal) && addEmpty) {
retVal = new CmpFieldMapping();
retVal.setFieldName(fname);
em.addCmpFieldMapping(retVal);
}
return retVal;
}
/** helper method */
private static BaseBean findSingleCompatibleBean(String argOneName, BaseBean argOne, String argTwoName,
String argTwo, String propName, Class type) {
BaseBean retVal = null;
if (null == argTwo || argTwo.length() < 1)
throw new IllegalArgumentException(argTwoName);
List l = findCompatibleBeansWithValue(argOne, propName, argTwo,
type);
if (null != l) {
if (l.size() == 1)
retVal = (BaseBean) l.get(0);
else if (l.size() > 1)
throw new IllegalArgumentException(argOneName);
}
return retVal;
}
/** A utility for finding beans in a graph of BaseBean objects.
*
* Search the bean graph, starting at a given root, for beans where the named
* property has the given value. The returned list is filtered by assignment
* compatibility.
* @return The assignment compatible BaseBeans that were found.
* @param root The root of a search
* @param propName The name of the element
* @param propVal the value of the element
* @param type The expected type of the value to be returned.
* @throws IllegalArgumentException If the bean is not part of a complete bean graph.
*/
protected static List findCompatibleBeansWithValue(BaseBean root, String propName, String propVal, Class type) throws IllegalArgumentException {
GraphManager gm = root.graphManager();
if (null == gm) {
throw new IllegalArgumentException(bundle.getString("ERR_DISCONNECTED_NOT_SUPPORTED"));
}
String[] props = root.findPropertyValue(propName, propVal);
if (props == null) {
return null;
}
List retVal = new ArrayList<>();
for (int i = 0; i < props.length; i++) {
// get the bean that is the property's parent.
BaseBean candidate = gm.getPropertyParent(props[i]);
if (type.isInstance(candidate)) {
retVal.add(candidate);
}
}
return retVal;
}
}
