initial add of EbeanORM server based on v2.8.1

src/main/java/com/avaje/ebeaninternal/server/query/SqlTreeNode.java

@@ -0,0 +1,55 @@
+package com.avaje.ebeaninternal.server.query;
+
+import java.sql.SQLException;
+import java.util.List;
+
+import com.avaje.ebeaninternal.server.deploy.DbReadContext;
+import com.avaje.ebeaninternal.server.deploy.DbSqlContext;
+
+public interface SqlTreeNode {
+
+	/**
+	 * the new line character used.
+	 * <p>
+	 * Note that this is removed for logging sql to the transaction log.
+	 * </p>
+	 */
+	public static final char NEW_LINE = '\n';
+
+	public static final String PERIOD = ".";
+
+	public static final String COMMA = ", ";
+
+	public static final int NORMAL = 0;
+	public static final int SHARED = 1;
+	public static final int READONLY = 2;
+	
+    public void buildSelectExpressionChain(List<String> selectChain);
+
+	/**
+	 * Append the required column information to the SELECT part of the sql
+	 * statement.
+	 */
+	public void appendSelect(DbSqlContext ctx, boolean subQuery);
+
+	/**
+	 * Append to the FROM part of the sql.
+	 */
+	public void appendFrom(DbSqlContext ctx, boolean forceOuterJoin);
+
+	/**
+	 * Append any where predicates for inheritance.
+	 */
+	public void appendWhere(DbSqlContext ctx);
+
+	/**
+	 * Load the appropriate information from the SqlSelectReader.
+	 * <p>
+	 * At a high level this actually controls the reading of the data from the
+	 * jdbc resultSet and putting it into the bean etc.
+	 * </p>
+	 * 
+	 */
+	public void load(DbReadContext ctx, Object parentBean) throws SQLException;
+
+}