118 lines
4.0 KiB
Java
118 lines
4.0 KiB
Java
package org.gcube.informationsystem.resourceregistry.queries.json.base.entities;
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import org.gcube.com.fasterxml.jackson.databind.JsonNode;
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import org.gcube.com.fasterxml.jackson.databind.node.ArrayNode;
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import org.gcube.informationsystem.base.reference.AccessType;
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import org.gcube.informationsystem.base.reference.Direction;
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import org.gcube.informationsystem.model.reference.entities.Resource;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.types.SchemaException;
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import org.gcube.informationsystem.resourceregistry.queries.json.base.relations.JsonQueryConsistsOf;
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import org.gcube.informationsystem.resourceregistry.queries.json.base.relations.JsonQueryIsRelatedTo;
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import org.gcube.informationsystem.resourceregistry.utils.OrientDBUtility;
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/**
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* @author Luca Frosini (ISTI - CNR)
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*/
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public class JsonQueryResource extends JsonQueryEntity {
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public JsonQueryResource(JsonNode jsonQuery) throws SchemaException, ResourceRegistryException {
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super(jsonQuery, AccessType.RESOURCE);
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this.fieldNamesToRemove.add(Resource.CONSISTS_OF_PROPERTY);
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this.fieldNamesToRemove.add(Resource.IS_RELATED_TO_PROPERTY);
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}
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public StringBuffer createSelect(StringBuffer stringBuffer, boolean wrapInnerQuery) throws SchemaException, ResourceRegistryException {
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StringBuffer buffer = new StringBuffer();
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buffer.append("SELECT FROM ");
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if(wrapInnerQuery) {
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buffer.append("( ");
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buffer.append(stringBuffer);
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buffer.append(")");
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}else {
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buffer.append(type);
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}
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if(entryPoint || size>1) {
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buffer.append(" WHERE ");
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}
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if(size > 1) {
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buffer.append(addConstraints(jsonNode, null, null));
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if(entryPoint) {
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buffer.append(" AND ");
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}
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}
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if(entryPoint) {
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buffer.append(OrientDBUtility.ORIENTDB_CLASS_PROPERTY);
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buffer.append(" INSTANCEOF \"");
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buffer.append(type);
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buffer.append("\"");
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}
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return buffer;
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}
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@Override
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public StringBuffer analize(StringBuffer stringBuffer) throws SchemaException, ResourceRegistryException {
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boolean wrapInnerQuery = false;
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if(traverseBack) {
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StringBuffer buffer = new StringBuffer();
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buffer.append("TRAVERSE ");
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buffer.append(direction.name().toLowerCase());
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buffer.append("V(\"");
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buffer.append(type);
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buffer.append("\") FROM ( ");
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buffer.append(stringBuffer);
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buffer.append(")");
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stringBuffer = buffer;
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wrapInnerQuery = true;
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}
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ArrayNode isRelatedToArray = (ArrayNode) jsonNode.get(Resource.IS_RELATED_TO_PROPERTY);
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if(isRelatedToArray!=null && isRelatedToArray.size()>0) {
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--size;
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for(int i=0; i<isRelatedToArray.size(); i++) {
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JsonNode isRelatedToJsonNode = isRelatedToArray.get(i);
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JsonQueryIsRelatedTo jsonQueryIsRelatedTo = new JsonQueryIsRelatedTo(isRelatedToJsonNode);
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jsonQueryIsRelatedTo.setRequestedResourceType(type);
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jsonQueryIsRelatedTo.setDirectionByJson();
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jsonQueryIsRelatedTo.setTraverseBack( (!(!traverseBack) && i==0) );
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stringBuffer = jsonQueryIsRelatedTo.analize(stringBuffer);
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}
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wrapInnerQuery = true;
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}
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ArrayNode consistsOfArray = (ArrayNode) jsonNode.get(Resource.CONSISTS_OF_PROPERTY);
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if(consistsOfArray!=null && consistsOfArray.size()>0) {
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--size;
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for(int i=0; i<consistsOfArray.size(); i++) {
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JsonNode consistsOfJsonNode = consistsOfArray.get(i);
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JsonQueryConsistsOf jsonQueryConsistsOf = new JsonQueryConsistsOf(consistsOfJsonNode);
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jsonQueryConsistsOf.setRequestedResourceType(type);
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jsonQueryConsistsOf.setDirection(Direction.IN);
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jsonQueryConsistsOf.setTraverseBack(!((!traverseBack) && !wrapInnerQuery && i==0));
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stringBuffer = jsonQueryConsistsOf.analize(stringBuffer);
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}
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wrapInnerQuery = true; // Must be set after the cycle and not before
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}
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// The Resource has no other referenced ER inside
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if(!wrapInnerQuery) {
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return createSelect(stringBuffer, wrapInnerQuery);
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}
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if(entryPoint || size>1) {
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return createSelect(stringBuffer, wrapInnerQuery);
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}
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return stringBuffer;
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}
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}
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