initial add of EbeanORM server based on v2.8.1

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

@@ -0,0 +1,113 @@
+package com.avaje.ebeaninternal.server.expression;
+
+import com.avaje.ebean.event.BeanQueryRequest;
+import com.avaje.ebeaninternal.api.SpiExpressionRequest;
+import com.avaje.ebeaninternal.server.el.ElPropertyValue;
+
+public class SimpleExpression extends AbstractExpression implements LuceneAwareExpression {
+
+  private static final long serialVersionUID = -382881395755603790L;
+
+  enum Op {
+    EQ(" = ? ", " = "), NOT_EQ(" <> ? ", " <> "), LT(" < ? ", " < "), LT_EQ(" <= ? ", " <= "), GT(" > ? ", " > "), GT_EQ(" >= ? ", " >= ");
+
+    String exp;
+    String shortDesc;
+
+    Op(String exp, String shortDesc) {
+      this.exp = exp;
+      this.shortDesc = shortDesc;
+    }
+
+    public String bind() {
+      return exp;
+    }
+
+    public String shortDesc() {
+      return shortDesc;
+    }
+  }
+
+  private final Op type;
+
+  private final Object value;
+
+  public SimpleExpression(FilterExprPath pathPrefix, String propertyName, Op type, Object value) {
+    super(pathPrefix, propertyName);
+    this.type = type;
+    this.value = value;
+  }
+
+  public boolean isOpEquals() {
+    return Op.EQ.equals(type);
+  }
+
+  public void addBindValues(SpiExpressionRequest request) {
+
+    ElPropertyValue prop = getElProp(request);
+    if (prop != null) {
+      if (prop.isAssocId()) {
+        Object[] ids = prop.getAssocOneIdValues(value);
+        if (ids != null) {
+          for (int i = 0; i < ids.length; i++) {
+            request.addBindValue(ids[i]);
+          }
+        }
+        return;
+      }
+      if (prop.isDbEncrypted()) {
+        // bind the key as well as the value
+        String encryptKey = prop.getBeanProperty().getEncryptKey().getStringValue();
+        request.addBindValue(encryptKey);
+      } else if (prop.isLocalEncrypted()) {
+        // not supporting this for equals (but probably could)
+        // prop.getBeanProperty().getScalarType();
+
+      }
+    }
+
+    request.addBindValue(value);
+  }
+
+  public void addSql(SpiExpressionRequest request) {
+
+    String propertyName = getPropertyName();
+
+    ElPropertyValue prop = getElProp(request);
+    if (prop != null) {
+      if (prop.isAssocId()) {
+        request.append(prop.getAssocOneIdExpr(propertyName, type.bind()));
+        return;
+      }
+      if (prop.isDbEncrypted()) {
+        String dsql = prop.getBeanProperty().getDecryptSql();
+        request.append(dsql).append(type.bind());
+        return;
+      }
+    }
+    request.append(propertyName).append(type.bind());
+  }
+
+  /**
+   * Based on the type and propertyName.
+   */
+  public int queryAutoFetchHash() {
+    int hc = SimpleExpression.class.getName().hashCode();
+    hc = hc * 31 + propName.hashCode();
+    hc = hc * 31 + type.name().hashCode();
+    return hc;
+  }
+
+  public int queryPlanHash(BeanQueryRequest<?> request) {
+    return queryAutoFetchHash();
+  }
+
+  public int queryBindHash() {
+    return value.hashCode();
+  }
+
+  public Object getValue() {
+    return value;
+  }
+
+}