move example code SearchClient out of yacycore package

to example directory

examples/SimpleSearchClient/pom.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>net.yacy</groupId>
+    <artifactId>SimpleSearchClient</artifactId>
+    <version>1.0</version>
+    <packaging>jar</packaging>
+    <description>Simple search client example to query YaCy and receive search results as RSS feed</description>
+    
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>1.7</maven.compiler.source>
+        <maven.compiler.target>1.7</maven.compiler.target>
+    </properties>
+
+    <build>
+        <sourceDirectory>src</sourceDirectory>
+    </build>
+    
+</project>

examples/SimpleSearchClient/src/YaCySearchClient.java

@@ -23,18 +23,17 @@
  *  If not, see <http://www.gnu.org/licenses/>.
  */
 
-package net.yacy;
+package net.yacy.simplesearchclient;
 
 import java.io.IOException;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.regex.Pattern;
 
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
 
-import net.yacy.cora.util.CommonPattern;
-
 import org.w3c.dom.CharacterData;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
@@ -55,6 +54,7 @@ public class YaCySearchClient {
     private final String host, query;
     private final int port;
     private int offset;
+    private final static Pattern SPACE       = Pattern.compile(" ");
 
     public YaCySearchClient(final String host, final int port, final String query) {
         this.host = host;
@@ -80,7 +80,7 @@ public class YaCySearchClient {
                     .append("/yacysearch.rss?verify=false&startRecord=")
                     .append(YaCySearchClient.this.offset)
                     .append("&maximumRecords=10&resource=local&query=")
-                    .append(CommonPattern.SPACE.matcher(YaCySearchClient.this.query).replaceAll("+")).toString();
+                    .append(SPACE.matcher(YaCySearchClient.this.query).replaceAll("+")).toString();
             try { url = new URL(u); } catch (final MalformedURLException e) { throw new IOException (e); }
             try { doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(url.openStream()); }
             catch (final ParserConfigurationException e) { throw new IOException (e); }
@@ -131,7 +131,13 @@ public class YaCySearchClient {
      * Use this method as stub for an integration in your own programs
      */
     public static void main(String[] args) {
-        for (String query: args) try {
+        if (args.length < 1) {
+            System.out.println("No query string as argument found.");
+            System.out.println("Call the main method with one argument, the query string,");
+            System.out.println("while YaCy is running on localhost.");
+        } else {
+            for (String query : args) {
+                try {
                     long t = System.currentTimeMillis();
                     YaCySearchClient search = new YaCySearchClient("localhost", 8090, query);
                     System.out.println("Search result for '" + query + "':");
@@ -142,3 +148,5 @@ public class YaCySearchClient {
                 }
             }
         }
+    }
+}