#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/query/SqlTreeNodeRoot.java

@@ -0,0 +1,62 @@
+package io.ebeaninternal.server.query;
+
+import io.ebeaninternal.api.SpiQuery;
+import io.ebeaninternal.server.deploy.BeanDescriptor;
+import io.ebeaninternal.server.deploy.BeanPropertyAssocMany;
+import io.ebeaninternal.server.deploy.DbSqlContext;
+import io.ebeaninternal.server.deploy.TableJoin;
+
+import java.util.List;
+
+/**
+ * Represents the root node of the Sql Tree.
+ */
+final class SqlTreeNodeRoot extends SqlTreeNodeBean {
+
+  private final TableJoin includeJoin;
+
+  /**
+   * Specify for SqlSelect to include an Id property or not.
+   */
+  SqlTreeNodeRoot(BeanDescriptor<?> desc, SqlTreeProperties props, List<SqlTreeNode> myList, boolean withId,
+                  TableJoin includeJoin, BeanPropertyAssocMany<?> many, SpiQuery.TemporalMode temporalMode, boolean disableLazyLoad) {
+
+    super(desc, props, myList, withId, many, temporalMode, disableLazyLoad);
+    this.includeJoin = includeJoin;
+  }
+
+  /**
+   * Set AsOf support (at root level).
+   */
+  public void addAsOfTableAlias(SpiQuery<?> query) {
+    if (desc.isHistorySupport()) {
+      query.setAsOfBaseTable();
+      query.incrementAsOfTableCount();
+    }
+    if (lazyLoadParent != null && lazyLoadParent.isManyToManyWithHistory()) {
+      query.incrementAsOfTableCount();
+    }
+    for (SqlTreeNode aChildren : children) {
+      aChildren.addAsOfTableAlias(query);
+    }
+  }
+
+  /**
+   * For the root node there is no join type or on clause etc.
+   */
+  @Override
+  public SqlJoinType appendFromBaseTable(DbSqlContext ctx, SqlJoinType joinType) {
+
+    ctx.append(desc.getBaseTable(temporalMode));
+    ctx.append(" ").append(baseTableAlias);
+
+    if (includeJoin != null) {
+      String a1 = baseTableAlias;
+      String a2 = "int_"; // unique alias for intersection join
+      includeJoin.addJoin(joinType, a1, a2, ctx);
+    }
+
+    return joinType;
+  }
+
+}