Added simple interactive client.

src/test/java/io/github/mapepire_ibmi/InteractiveClient.java

@@ -0,0 +1,179 @@
+package io.github.mapepire_ibmi;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.io.StringReader;
+import java.util.HashMap;
+import java.util.List;
+import java.util.ListIterator;
+import java.util.Properties;
+import java.util.concurrent.ExecutionException;
+import java.util.function.Consumer;
+
+import io.github.mapepire_ibmi.types.ColumnMetadata;
+import io.github.mapepire_ibmi.types.DaemonServer;
+import io.github.mapepire_ibmi.types.JDBCOptions;
+import io.github.mapepire_ibmi.types.QueryMetadata;
+import io.github.mapepire_ibmi.types.QueryResult;
+
+public class InteractiveClient {
+
+	private static DaemonServer daemonServer;
+    private static SqlJob job; 
+	public static void main(String[] args) {
+
+		System.out.println("Running interactive MapepireClient");
+		try {
+			BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
+			String line = input.readLine();
+			boolean running = true;
+			while (line != null && running) {
+				running = processLine(line);
+				line = input.readLine();
+			}
+
+		} catch (Exception e) {
+			System.out.println("Severe failure");
+			e.printStackTrace(System.out);
+		}
+	}
+
+	private static boolean processLine(String line) {
+
+		try { 
+		String[] lineElements = splitLine(line);
+		if (lineElements.length > 0) {
+			if ("connect".equalsIgnoreCase(lineElements[0])) {
+				connect(lineElements, line);
+			} else if ("runQuery".equalsIgnoreCase(lineElements[0])) {
+				runQuery(line);
+			} else if ("help".equalsIgnoreCase(lineElements[0])) {
+				processHelp(); 
+			} else if ("exit".equalsIgnoreCase(lineElements[0])) {
+				return false;
+			} else {
+				System.out.println("Did not recognize command: " + line);
+				processHelp();
+			}
+		}
+		} catch (Exception e) { 
+			System.out.println("Error processing "+line); 
+			e.printStackTrace(System.out); 
+		}
+		return true;
+	}
+
+	private static void runQuery(String line) throws  Exception {
+		int runQueryIndex = line.toUpperCase().indexOf("RUNQUERY"); 
+		line = line.substring(runQueryIndex+8);
+		// Initialize and execute query
+		Query query = job.query(line);
+		QueryResult<Object> result = query.execute().get();
+
+		String errorString = result.getError();
+		if (errorString != null) { 
+			System.out.println("Query returned errorString:"+errorString); 
+		} else { 
+			QueryMetadata metadata = result.getMetadata(); 
+			List<ColumnMetadata> columns = metadata.getColumns();
+			columns.forEach(col->System.out.print(col.getName()+" ")); 
+			System.out.println(); 
+			List<Object> data = result.getData();
+			ListIterator<Object> it = data.listIterator(); 
+			while (it.hasNext()) { 
+				HashMap hashmap = (HashMap) it.next(); 
+				columns.forEach(col->System.out.print(hashmap.get(col.getName())+" ")); 
+				System.out.println(); 
+			}
+		}
+		// Close query and job
+		query.close().get();
+
+
+
+	}
+
+	private static void processHelp() {
+		System.out.println("Possible commands"); 
+		System.out.println("connect host port user password validateCA [CA|NONE] [\"jdbcOption1=value1[;jdbcOption=value]*\"]");
+		System.out.println("runQuery QUERY");
+		System.out.println("help"); 
+		System.out.println("exit"); 
+
+	}
+
+	private static void connect(String[] lineElements, String line) throws Exception {
+
+		int elementCount = lineElements.length;
+		String host = null;
+		int port = 0;
+		String user = null;
+		String password = null;
+		boolean rejectUnauthorized = true;
+		String ca = null;
+		String stringOptions;
+		Properties jdbcProperties = null; 
+
+		if (elementCount > 1)
+			host = lineElements[1];
+		if (elementCount > 2)
+			port = Integer.parseInt(lineElements[2]);
+		if (elementCount > 3)
+			user = lineElements[3];
+		if (elementCount > 4)
+			password = lineElements[4];
+		if (elementCount > 5)
+			rejectUnauthorized = Boolean.parseBoolean(lineElements[5]);
+		if (elementCount > 6)
+			ca = lineElements[6];
+		if (elementCount > 7) {
+			stringOptions = lineElements[7]; 
+			if (stringOptions.charAt(0) == '"') { 
+				String[] quoteSplit = line.split("\""); 
+				stringOptions = quoteSplit[1]; 
+			}
+			line.replace(';','\n'); 
+			jdbcProperties = new Properties(); 
+			StringReader reader = new StringReader(stringOptions); 
+			jdbcProperties.load(reader); 
+		}
+
+		DaemonServer newDaemonServer = null;
+		String successString; 
+		if (elementCount <= 5) {
+			newDaemonServer = new DaemonServer(host, port, user, password);
+			successString  = "connection created using (" + host + "," + port + "," + user + ",*******)";
+		} else if (elementCount == 6 || "NONE".equals(ca) ) {
+			newDaemonServer = new DaemonServer(host, port, user, password, rejectUnauthorized, null);
+			successString  = "connection created using (" + host + "," + port + "," + user + ",*******,"
+					+ rejectUnauthorized + ")";
+		} else {
+			newDaemonServer = new DaemonServer(host, port, user, password, rejectUnauthorized, ca);
+			successString  = "connection created using (" + host + "," + port + "," + user + ",*******,"
+					+ rejectUnauthorized + "," + ca + ")";
+		}
+		daemonServer = newDaemonServer;
+		SqlJob newJob ; 
+		if (jdbcProperties == null) { 
+		    newJob = new SqlJob(); 
+		} else { 
+			JDBCOptions jdbcOptions = new JDBCOptions(jdbcProperties); 
+			newJob = new SqlJob(jdbcOptions); 
+		}
+		newJob.connect(daemonServer).get();
+
+		if (job != null) { 
+			job.close(); 
+		}
+		job = newJob; 
+		System.out.println(successString); 
+
+	}
+
+	private static String[] splitLine(String line) {
+		// For now, keep this simple.
+		// If the future, more complex analysis may be needed.
+		return line.split(" +");
+	}
+
+}