MLE-17044 Added trueQuery, falseQuery, and operatorState

These were all oversights in `StructuredQueryBuilder`.

Author: rjrudin

marklogic-client-api/src/main/java/com/marklogic/client/query/StructuredQueryBuilder.java

@@ -336,6 +336,39 @@ public StructuredQueryDefinition andNot(StructuredQueryDefinition positive, Stru
     return new AndNotQuery(positive, negative);
   }
 
+	/**
+	 * Defines a "true" query that selects all documents.
+	 *
+	 * @since 7.1.0
+	 * @return the StructuredQueryDefinition for the "true" query.
+	 */
+	public StructuredQueryDefinition trueQuery() {
+		return new TrueQuery();
+	}
+
+	/**
+	 * Defines a "true" query that selects all documents.
+	 *
+	 * @since 7.1.0
+	 * @return the StructuredQueryDefinition for the "true" query.
+	 */
+	public StructuredQueryDefinition falseQuery() {
+		return new FalseQuery();
+	}
+
+	/**
+	 * Define a new operator state; see https://docs.marklogic.com/guide/search-dev/structured-query#id_45570 for
+	 * more information.
+	 *
+	 * @param operatorName The name of a custom runtime configuration operator defined by the <operator/> query option.
+	 * @param stateName The name of a state recognized by this operator.
+	 * @since 7.1.0
+	 * @return the StructuredQueryDefinition for the operator state.
+	 */
+	public StructuredQueryDefinition operatorState(String operatorName, String stateName) {
+		return new OperatorState(operatorName, stateName);
+	}
+
   /**
    * Defines a NEAR query over the list of query definitions
    * with default parameters.
@@ -1289,6 +1322,43 @@ public void innerSerialize(XMLStreamWriter serializer) throws XMLStreamException
     }
   }
 
+  protected class TrueQuery extends AbstractStructuredQuery {
+	  @Override
+	  public void innerSerialize(XMLStreamWriter serializer) throws XMLStreamException {
+		  serializer.writeEmptyElement(SEARCH_API_NS, "true-query");
+	  }
+  }
+
+  protected class FalseQuery extends AbstractStructuredQuery {
+	  @Override
+	  public void innerSerialize(XMLStreamWriter serializer) throws XMLStreamException {
+		  serializer.writeEmptyElement(SEARCH_API_NS, "false-query");
+	  }
+  }
+
+  protected class OperatorState extends AbstractStructuredQuery {
+
+	  private final String operatorName;
+	  private final String stateName;
+	  public OperatorState(String operatorName, String stateName) {
+		  super();
+		  this.operatorName = operatorName;
+		  this.stateName = stateName;
+	  }
+
+	  @Override
+	  public void innerSerialize(XMLStreamWriter serializer) throws XMLStreamException {
+		  writeSearchElement(serializer, "operator-state");
+		  writeSearchElement(serializer, "operator-name");
+		  serializer.writeCharacters(operatorName);
+		  serializer.writeEndElement();
+		  writeSearchElement(serializer, "state-name");
+		  serializer.writeCharacters(stateName);
+		  serializer.writeEndElement();
+		  serializer.writeEndElement();
+	  }
+  }
+
   protected class AndNotQuery
     extends AbstractStructuredQuery {
     private StructuredQueryDefinition positive;

marklogic-client-api/src/test/java/com/marklogic/client/test/StructuredSearchTest.java

@@ -14,25 +14,75 @@
 import com.marklogic.client.io.StringHandle;
 import com.marklogic.client.query.*;
 import com.marklogic.client.util.EditableNamespaceContext;
+import org.jdom2.Namespace;
+import org.jdom2.input.SAXBuilder;
 import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 import org.xml.sax.SAXException;
 
 import java.io.IOException;
+import java.io.StringReader;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
 import static org.junit.jupiter.api.Assertions.*;
 
 public class StructuredSearchTest {
 
+	private QueryManager queryManager;
+	private StructuredQueryBuilder queryBuilder;
+
 	@BeforeAll
 	public static void beforeClass() {
 		Common.connect();
 	}
 
+	@BeforeEach
+	void setup() {
+		queryManager = Common.client.newQueryManager();
+		queryBuilder = queryManager.newStructuredQueryBuilder();
+	}
+
+	@Test
+	void trueQuery() {
+		long total = queryManager.search(queryBuilder.and(
+			queryBuilder.trueQuery(),
+			queryBuilder.collection("zipcode")
+		), new SearchHandle()).getTotalResults();
+		assertEquals(2, total, "Expecting 2 documents in the zipcode collection, and the trueQuery should not affect that.");
+
+		total = queryManager.search(queryBuilder.trueQuery(), new SearchHandle()).getTotalResults();
+		assertTrue(total > 2, "Expecting all documents to be returned, which should be more than the 2 in the " +
+			"zipcode collection. Actual count: " + total);
+	}
+
+	@Test
+	void falseQuery() {
+		long total = queryManager.search(queryBuilder.and(
+			queryBuilder.falseQuery(),
+			queryBuilder.collection("zipcode")
+		), new SearchHandle()).getTotalResults();
+		assertEquals(0, total, "Expecting 0 documents due to the false query.");
+
+		total = queryManager.search(queryBuilder.falseQuery(), new SearchHandle()).getTotalResults();
+		assertEquals(0, total, "A false-query should return zero documents.");
+	}
+
+	@Test
+	void operatorState() throws Exception {
+		StructuredQueryDefinition query = queryBuilder.operatorState("sort", "date");
+		String xml = query.serialize();
+
+		org.jdom2.Document doc = new SAXBuilder().build(new StringReader(xml));
+		Namespace ns = Namespace.getNamespace("http://marklogic.com/appservices/search");
+		org.jdom2.Element operatorState = doc.getRootElement().getChild("operator-state", ns);
+		assertEquals("sort", operatorState.getChildText("operator-name", ns));
+		assertEquals("date", operatorState.getChildText("state-name", ns));
+	}
+
 	@Test
 	public void testStructuredSearch() {
 		QueryManager queryMgr = Common.client.newQueryManager();