X-Git-Url: http://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FFieldList.java;h=26ac966a28a94eff7f45ca953b07f08d36545106;hb=f35b6d628f68e3b5ef19965ad8988d0dd1eb8efa;hp=58cf6d50ec318ab20bd40e7a7efa5a165f5b69ca;hpb=312fec956e43f5d0a38617da5d0add9c62563e2c;p=GpsPrune.git

diff --git a/tim/prune/data/FieldList.java b/tim/prune/data/FieldList.java
index 58cf6d5..26ac966 100644
--- a/tim/prune/data/FieldList.java
+++ b/tim/prune/data/FieldList.java
@@ -6,6 +6,7 @@ package tim.prune.data;
  */
 public class FieldList
 {
+	/** Array of Field objects making the list */
 	private Field[] _fieldArray;
 
 
@@ -29,7 +30,7 @@ public class FieldList
 
 	/**
 	 * Constructor giving array of Field objects
-	 * @param inFieldArray
+	 * @param inFieldArray array of Field objects
 	 */
 	public FieldList(Field[] inFieldArray)
 	{
@@ -62,8 +63,7 @@ public class FieldList
 
 
 	/**
-	 * Check whether the FieldList contains the given
-	 * Field object
+	 * Check whether the FieldList contains the given Field object
 	 * @param inField Field to check
 	 * @return true if the FieldList contains the given field
 	 */
@@ -135,18 +135,39 @@ public class FieldList
 	}
 
 
+	/**
+	 * Extend the field list to include the specified field
+	 * @param inField Field to add
+	 * @return new index of added Field
+	 */
+	public int extendList(Field inField)
+	{
+		// See if field is already in list
+		int currIndex = getFieldIndex(inField);
+		if (currIndex >= 0) return currIndex;
+		// Need to extend - increase array size
+		int oldNumFields = _fieldArray.length;
+		Field[] fields = new Field[oldNumFields + 1];
+		System.arraycopy(_fieldArray, 0, fields, 0, oldNumFields);
+		_fieldArray = fields;
+		// Add new field and return index
+		_fieldArray[oldNumFields] = inField;
+		return oldNumFields;
+	}
+
+
 	/**
 	 * Convert to String for debug
 	 */
 	public String toString()
 	{
 		StringBuffer buffer = new StringBuffer();
-		buffer.append("(");
+		buffer.append('(');
 		for (int i=0; i<_fieldArray.length; i++)
 		{
 			buffer.append(_fieldArray[i].getName()).append(',');
 		}
-		buffer.append(")");
+		buffer.append(')');
 		return buffer.toString();
 	}
 }