initial add of EbeanORM server based on v2.8.1

src/main/java/com/avaje/ebeaninternal/server/expression/LogicExpression.java

@@ -0,0 +1,92 @@
+package com.avaje.ebeaninternal.server.expression;
+
+import com.avaje.ebean.Expression;
+import com.avaje.ebean.event.BeanQueryRequest;
+import com.avaje.ebeaninternal.api.ManyWhereJoins;
+import com.avaje.ebeaninternal.api.SpiExpression;
+import com.avaje.ebeaninternal.api.SpiExpressionRequest;
+import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
+
+/**
+ * A logical And or Or for joining two expressions.
+ */
+abstract class LogicExpression implements SpiExpression {
+
+  private static final long serialVersionUID = 616860781960645251L;
+
+  static final String AND = " and ";
+  static final String OR = " or ";
+
+  static class And extends LogicExpression {
+
+    private static final long serialVersionUID = -3832889676798526444L;
+
+    And(Expression expOne, Expression expTwo) {
+      super(AND, expOne, expTwo);
+    }
+  }
+
+  static class Or extends LogicExpression {
+
+    private static final long serialVersionUID = -6871993143194094819L;
+
+    Or(Expression expOne, Expression expTwo) {
+      super(OR, expOne, expTwo);
+    }
+  }
+
+  private final SpiExpression expOne;
+
+  private final SpiExpression expTwo;
+
+  private final String joinType;
+
+  LogicExpression(String joinType, Expression expOne, Expression expTwo) {
+    this.joinType = joinType;
+    this.expOne = (SpiExpression) expOne;
+    this.expTwo = (SpiExpression) expTwo;
+  }
+
+  public void containsMany(BeanDescriptor<?> desc, ManyWhereJoins manyWhereJoin) {
+    expOne.containsMany(desc, manyWhereJoin);
+    expTwo.containsMany(desc, manyWhereJoin);
+  }
+
+  public void addBindValues(SpiExpressionRequest request) {
+    expOne.addBindValues(request);
+    expTwo.addBindValues(request);
+  }
+
+  public void addSql(SpiExpressionRequest request) {
+
+    request.append("(");
+    expOne.addSql(request);
+    request.append(joinType);
+    expTwo.addSql(request);
+    request.append(") ");
+  }
+
+  /**
+   * Based on the joinType plus the two expressions.
+   */
+  public int queryAutoFetchHash() {
+    int hc = LogicExpression.class.getName().hashCode() + joinType.hashCode();
+    hc = hc * 31 + expOne.queryAutoFetchHash();
+    hc = hc * 31 + expTwo.queryAutoFetchHash();
+    return hc;
+  }
+
+  public int queryPlanHash(BeanQueryRequest<?> request) {
+    int hc = LogicExpression.class.getName().hashCode() + joinType.hashCode();
+    hc = hc * 31 + expOne.queryPlanHash(request);
+    hc = hc * 31 + expTwo.queryPlanHash(request);
+    return hc;
+  }
+
+  public int queryBindHash() {
+    int hc = expOne.queryBindHash();
+    hc = hc * 31 + expTwo.queryBindHash();
+    return hc;
+  }
+
+}