Reduce disk space needed for temp files

src/org/leolo/rail/nrd/AssoicationProcessor.java

@@ -2,15 +2,18 @@ package org.leolo.rail.nrd;
 
 import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
 import java.sql.Types;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.util.zip.GZIPInputStream;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -30,7 +33,7 @@ public class AssoicationProcessor implements Runnable {
 		log.info("Processing {}", fileName.getName());
 		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
 		try(
-				BufferedReader br = new BufferedReader(new FileReader(fileName));
+				BufferedReader br = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(fileName))));
 				Connection conn = DatabaseManager.getInstance().getConnection();
 				PreparedStatement pstmt = conn.prepareStatement("INSERT INTO train_assoc VALUES(null,?,?,?,?,?,?,?,?,?,?,?,?)")
 		){

src/org/leolo/rail/nrd/FileLoader.java

@@ -3,10 +3,13 @@ package org.leolo.rail.nrd;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
 import java.io.FileReader;
+import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
 import java.io.PrintWriter;
 import java.net.URL;
 import java.net.URLConnection;
@@ -14,6 +17,7 @@ import java.util.Base64;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 import java.util.zip.ZipException;
 
 import org.apache.logging.log4j.LogManager;
@@ -71,9 +75,9 @@ public class FileLoader {
 				GZIPInputStream gis = new GZIPInputStream(fis);
 				BufferedReader br = new BufferedReader(new InputStreamReader(gis));
 		){
-			PrintWriter ass = new PrintWriter(new File(tempDir, "ass_0"));
-			PrintWriter tip = new PrintWriter(new File(tempDir, "tip_0"));
-			PrintWriter sch = new PrintWriter(new File(tempDir, "sch_0"));
+			PrintWriter ass = new PrintWriter(new GZIPOutputStream(new FileOutputStream(new File(tempDir, "ass_0"))));
+			PrintWriter tip = new PrintWriter(new GZIPOutputStream(new FileOutputStream(new File(tempDir, "tip_0"))));
+			PrintWriter sch = new PrintWriter(new GZIPOutputStream(new FileOutputStream(new File(tempDir, "sch_0"))));
 			int count = 0;
 			while(true) {
 				String line = br.readLine();
@@ -90,21 +94,21 @@ public class FileLoader {
 					countA++;
 					if(countA%Constants.BATCH_SIZE==0) {
 						ass.close();
-						ass = new PrintWriter(new File(tempDir, "ass_"+(++batchA)));
+						ass = new PrintWriter(new GZIPOutputStream(new FileOutputStream(new File(tempDir, "ass_"+(++batchA)))));
 					}
 				}else if("TiplocV1".equals(objectType)){
 					tip.println(obj.getJSONObject("TiplocV1"));
 					countT++;
 					if(countT%Constants.BATCH_SIZE==0) {
 						tip.close();
-						tip = new PrintWriter(new File(tempDir, "tip_"+(++batchT)));
+						tip = new PrintWriter(new GZIPOutputStream(new FileOutputStream(new File(tempDir, "tip_"+(++batchT)))));
 					}
 				}else if("JsonScheduleV1".equals(objectType)){
 					sch.println(obj.getJSONObject("JsonScheduleV1"));
 					countS++;
 					if(countS%Constants.BATCH_SIZE==0) {
 						sch.close();
-						sch = new PrintWriter(new File(tempDir, "sch_"+(++batchS)));
+						sch = new PrintWriter(new GZIPOutputStream(new FileOutputStream(new File(tempDir, "sch_"+(++batchS)))));
 					}
 				}else if("EOF".equals(objectType)){
 					//Nothing to do

src/org/leolo/rail/nrd/ScheduleProcessor.java

@@ -2,9 +2,11 @@ package org.leolo.rail.nrd;
 
 import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -12,6 +14,7 @@ import java.sql.Time;
 import java.sql.Types;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.util.zip.GZIPInputStream;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -79,7 +82,7 @@ public class ScheduleProcessor implements Runnable {
 		log.info("Processing {}", fileName.getName());
 		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
 		try(
-				BufferedReader br = new BufferedReader(new FileReader(fileName));
+				BufferedReader br = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(fileName))));
 				Connection conn = DatabaseManager.getInstance().getConnection();
 				PreparedStatement sMain = conn.prepareStatement("INSERT INTO train_schedule VALUES (?,?,?,?,?,?,?)");
 				PreparedStatement sDetail = conn.prepareStatement("INSERT INTO train_schedule_detail VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)");

src/org/leolo/rail/nrd/TiplocProcessor.java

@@ -2,15 +2,18 @@ package org.leolo.rail.nrd;
 
 import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
 import java.sql.Types;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.util.zip.GZIPInputStream;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -30,7 +33,7 @@ public class TiplocProcessor implements Runnable {
 		log.info("Processing {}", fileName.getName());
 		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
 		try(
-				BufferedReader br = new BufferedReader(new FileReader(fileName));
+				BufferedReader br = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(fileName))));
 				Connection conn = DatabaseManager.getInstance().getConnection();
 				PreparedStatement pstmt = conn.prepareStatement("INSERT INTO tiploc VALUES (?,?,?,?,?,?)")
 		){