Abstracted inner and outer join maps into superclass.

source/java/com/whitemagicsoftware/rxm/tree/xml/AttributeMapContext.java

		@Override
		public Token getStart() {
		+ String
		+ tableName = getParentTableText(),
		+ columnName = getColumnText(),
		+ attributeName = getAttributeText();
		+
		return new Token(
		String.format( ",%s", hasPrecedingPayload() ?
		- nextAttribute( getParentTableText(), getColumnText(), getAttributeText() ) :
		- firstAttribute( getParentTableText(), getColumnText(), getAttributeText() )
		+ nextAttribute( tableName, columnName, attributeName ) :
		+ firstAttribute( tableName, columnName, attributeName )
		)
		);

source/java/com/whitemagicsoftware/rxm/tree/xml/EmptyListContext.java

		-package com.whitemagicsoftware.rxm.tree.xml;
		-
		-import com.whitemagicsoftware.rxm.tree.Payload;
		-import com.whitemagicsoftware.rxm.tree.Tree;
		-
		-import org.antlr.v4.runtime.ParserRuleContext;
		-
		-/**
		- * Root context for a FromClauseList.
		- */
		-public class EmptyListContext extends PayloadParserRuleContext {
		- /**
		- * Sets the payload to null.
		- */
		- public EmptyListContext() {
		- this( null );
		- }
		-
		- /**
		- * Calls the superclass to construct this context instance.
		- *
		- * @param payload Passed to the superclass.
		- */
		- public EmptyListContext( Payload payload ) {
		- super( payload );
		- }
		-}
		-

source/java/com/whitemagicsoftware/rxm/tree/xml/InnerMapContext.java

		* <code>INNER JOIN</code> expression.
		*/
		-public class InnerMapContext extends PayloadParserRuleContext {
		+public class InnerMapContext extends JoinMapContext {
		/**
		* Default constructor (calls super).
		*
		* @param ctx The payload that associates the parser rule context with
		* the abstract syntax tree.
		*/
		public InnerMapContext( Payload ctx ) {
		super( ctx );
		- }
		-
		- /**
		- * Returns the starting text for an INNER JOIN clause.
		- */
		- @Override
		- public Token getStart() {
		- return new Token( "INNER JOIN" );
		}

		- /**
		- * Returns the ending text for an INNER JOIN clause.
		- */
		- @Override
		- public Token getStop() {
		- return new Token( "" );
		+ public String getJoinType() {
		+ return "INNER";
		}
		}

Delta	10 lines added, 45 lines removed, 35-line decrease