96 lines
3.4 KiB
Java
96 lines
3.4 KiB
Java
package org.gcube.informationsystem.resourceregistry.queries.json.base.relations;
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import org.gcube.com.fasterxml.jackson.databind.JsonNode;
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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.relations.ConsistsOf;
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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.entities.JsonQueryFacet;
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import org.gcube.informationsystem.resourceregistry.queries.json.base.entities.JsonQueryResource;
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/**
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* @author Luca Frosini (ISTI - CNR)
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*/
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public class JsonQueryConsistsOf extends JsonQueryRelation {
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protected String requestedResourceType;
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public JsonQueryConsistsOf(JsonNode jsonQuery) throws SchemaException, ResourceRegistryException {
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super(jsonQuery, AccessType.CONSISTS_OF);
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this.direction = Direction.IN;
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}
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public String getRequestedResourceType() {
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return requestedResourceType;
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}
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public void setRequestedResourceType(String requestedResourceType) {
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this.requestedResourceType = requestedResourceType;
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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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StringBuffer consistsOfBuffer = new StringBuffer();
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if(!jsonNode.has(ConsistsOf.SOURCE_PROPERTY)) {
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consistsOfBuffer.append("TRAVERSE ");
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consistsOfBuffer.append(direction.opposite().name().toLowerCase());
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consistsOfBuffer.append("V(\"");
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consistsOfBuffer.append(requestedResourceType);
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consistsOfBuffer.append("\") FROM ( "); // Open ( 1
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}
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int size = jsonNode.size();
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if(size > 2) {
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consistsOfBuffer.append("SELECT FROM ( "); // Open ( SELECT
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}
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consistsOfBuffer.append("TRAVERSE ");
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consistsOfBuffer.append(direction.name().toLowerCase());
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consistsOfBuffer.append("E(\"");
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consistsOfBuffer.append(type);
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consistsOfBuffer.append("\") FROM ( "); // Open ( 2
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if(!entryPoint) {
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StringBuffer buffer = new StringBuffer();
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buffer.append("TRAVERSE ");
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buffer.append(direction.opposite().name().toLowerCase());
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buffer.append("E(\"");
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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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}
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if(jsonNode.has(ConsistsOf.TARGET_PROPERTY)) {
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JsonNode facetJsonNode = jsonNode.get(ConsistsOf.TARGET_PROPERTY);
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JsonQueryFacet jsonQueryFacet = new JsonQueryFacet(facetJsonNode);
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jsonQueryFacet.setEntryPoint(entryPoint);
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stringBuffer = jsonQueryFacet.analize(stringBuffer);
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} else if(jsonNode.has(ConsistsOf.SOURCE_PROPERTY)) {
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JsonNode resourceJsonNode = jsonNode.get(ConsistsOf.SOURCE_PROPERTY);
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JsonQueryResource jsonQueryResource = new JsonQueryResource(resourceJsonNode);
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jsonQueryResource.setEntryPoint(entryPoint);
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stringBuffer = jsonQueryResource.analize(stringBuffer);
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}
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consistsOfBuffer.append(stringBuffer);
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consistsOfBuffer.append(")"); // Close ) 2
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// Size 2 means that only '@class' and 'target' properties are present
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if(size > 2) {
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consistsOfBuffer.append(") WHERE "); // Close ) SELECT
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consistsOfBuffer.append(addConstraints(jsonNode, null, null));
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}
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if(!jsonNode.has(ConsistsOf.SOURCE_PROPERTY)) {
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consistsOfBuffer.append(")"); // Close ) 1
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}
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return consistsOfBuffer;
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}
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}
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