initial add of EbeanORM server based on v2.8.1

src/main/java/com/avaje/ebeaninternal/api/SpiExpressionRequest.java

@@ -0,0 +1,52 @@
+package com.avaje.ebeaninternal.api;
+
+import java.util.ArrayList;
+
+import com.avaje.ebeaninternal.server.core.SpiOrmQueryRequest;
+import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
+
+/**
+ * Request object used for gathering expression sql and bind values.
+ */
+public interface SpiExpressionRequest {
+
+  /**
+   * Parse the logical property name to the deployment name.
+   */
+  public String parseDeploy(String logicalProp);
+
+	/**
+	 * Return the bean descriptor for the root type.
+	 */
+	public BeanDescriptor<?> getBeanDescriptor();
+	
+	/**
+	 * Return the associated QueryRequest.
+	 */
+	public SpiOrmQueryRequest<?> getQueryRequest();
+	
+	/**
+	 * Append to the expression sql.
+	 */
+	public SpiExpressionRequest append(String sql);
+	
+	/**
+	 * Add a bind value to this request.
+	 */
+	public void addBindValue(Object bindValue);
+	
+	/**
+	 * Return the accumulated expression sql for all expressions in this request.
+	 */
+	public String getSql();
+	
+	/**
+	 * Return the ordered list of bind values for all expressions in this request.
+	 */
+	public ArrayList<Object> getBindValues();
+	
+    /**
+     * Increments the parameter index and returns that value.
+     */
+    public int nextParameter();
+}