BaseX XQJ 1.3 embedded example with XQS Now uses DEFAULTDB option https://github.com/BaseXdb/basex/issues/821 https://github.com/fancellu/xqs http://xqj.net/basex/ http://basex.org/

BaseXEmbeddedXQS.scala

package com.felstar.xqs.example

import com.felstar.xqs.XQS._
import com.felstar.xqs.XQS.AllImplicits._
import xml.PrettyPrinter

import com.xqj2.XQConnection2

object BaseXEmbeddedXQS extends App {

  val conn =  new net.xqj.basex.local.BaseXXQDataSource().getConnection.asInstanceOf[XQConnection2]
 
  val strings: Seq[String] = conn("1 to 4")
   
  strings.foreach(println)
  
  val xqe = conn.createExpression()
   
  val db="xmlstore"
  
  xqe.executeCommand(s"CHECK $db")
  
  xqe.executeCommand("SET DEFAULTDB true")

  {
   val sampleXML= <root>
		  <child>John</child>
		  <child>Mary</child>
		  </root>
  
   val item=conn.createItemFromNode(sampleXML, null)
 
   conn.insertItem("sampleXML.xml",item,null)
  } 
  
  {
   val item=conn.createItemFromNode( <root2>Another one</root2>, null)
 
   conn.insertItem("sampleXML2.xml",item,null)
  }
  val elems:Seq[scala.xml.Elem] = conn("doc('sampleXML.xml'),doc('sampleXML2.xml')")
  
  val pp=new PrettyPrinter(80,2)

  elems foreach(x=>println(pp.format(x)))    
     
  conn.close()
}

output.txt

1
2
3
4
<root>
  <child>John</child>
  <child>Mary</child>
</root>
<root2>Another one</root2>

pom.xml

<?xml version='1.0' encoding='UTF-8'?>
<project
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

	<modelVersion>4.0.0</modelVersion>
	<groupId>com.felstar</groupId>
	<artifactId>basex-xqs-example</artifactId>
	<packaging>jar</packaging>
	<version>0.0.1</version>

	<build>
		<finalName>scalatra-maven-prototype</finalName>
		<sourceDirectory>src/main/scala</sourceDirectory>
		<testSourceDirectory>src/test/scala</testSourceDirectory>
		<plugins>
			<plugin>
				<groupId>net.alchim31.maven</groupId>
				<artifactId>scala-maven-plugin</artifactId>
				<version>3.1.6</version>
				<executions>
					<execution>
						<goals>
							<goal>compile</goal>
							<goal>testCompile</goal>
						</goals>
						<configuration>
							<args>
								<arg>-make:transitive</arg>
								<arg>-dependencyfile</arg>
								<arg>${project.build.directory}/.scala_dependencies</arg>
							</args>
						</configuration>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>
	<dependencies>
		<dependency>
			<groupId>org.scala-lang</groupId>
			<artifactId>scala-library</artifactId>
			<version>2.10.3</version>
			<scope>compile</scope>		
		</dependency>		
      <dependency>
         <groupId>net.xqj</groupId>
         <artifactId>basex-xqj</artifactId>
         <version>1.3.0-SNAPSHOT</version>
      </dependency>
      <dependency>
        <groupId>org.basex</groupId>
        <artifactId>basex</artifactId>
        <version>7.8-SNAPSHOT</version>
      </dependency>   
	</dependencies>	
	<repositories>		
		 <repository>
         <id>basex</id>
         <name>BaseX Maven Repository</name>
         <url>http://files.basex.org/maven</url>
      </repository> 
      <repository>
         <id>xqj.net</id>
         <name>XQJ.NET Maven Repository</name>
         <url>http://xqj.net/maven</url>
      </repository>
	</repositories>
</project>

One remark: You can address all documents of the currently opened database by starting your query with /.

Yes, I know, was just making it explicit.