FieldParseInfo is now an abstract class, with a concrete subclass for each IsoType. This greatly improves the parsing speed.

git-svn-id: https://j8583.svn.sourceforge.net/svnroot/j8583/j8583@66 db60a039-f72e-0410-b1d2-baa000846441

src/main/java/com/solab/iso8583/parse/AlphaParseInfo.java

@@ -0,0 +1,31 @@
+package com.solab.iso8583.parse;
+
+import java.text.ParseException;
+
+import com.solab.iso8583.CustomField;
+import com.solab.iso8583.IsoType;
+import com.solab.iso8583.IsoValue;
+
+/** This is the class used to parse ALPHA fields.
+ * 
+ * @author Enrique Zamudio
+ */
+public class AlphaParseInfo extends AlphaNumericFieldParseInfo {
+
+	public AlphaParseInfo(int len) {
+		super(IsoType.ALPHA, len);
+	}
+
+	public <T extends Object> IsoValue<?> parseBinary(byte[] buf, int pos, CustomField<T> custom) throws ParseException {
+		if (custom == null) {
+			return new IsoValue<String>(type, new String(buf, pos, length), length, null);
+		} else {
+			IsoValue<T> v = new IsoValue<T>(type, custom.decodeField(new String(buf, pos, length)), length, custom);
+			if (v.getValue() == null) {
+				return new IsoValue<String>(type, new String(buf, pos, length), length, null);
+			}
+			return v;
+		}
+	}
+
+}