Add SAP HANA support (#1511)

src/test/java/io/ebeaninternal/server/expression/platform/HanaDbExpressionTest.java

@@ -0,0 +1,70 @@
+package io.ebeaninternal.server.expression.platform;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+import io.ebeaninternal.api.SpiExpressionRequest;
+import io.ebeaninternal.server.expression.DefaultExpressionRequest;
+import io.ebeaninternal.server.expression.Op;
+
+public class HanaDbExpressionTest {
+  private HanaDbExpression expression = new HanaDbExpression();
+
+  @Test
+  public void testArrayContains() {
+    SpiExpressionRequest request = new DefaultExpressionRequest(null);
+    expression.arrayContains(request, "arrayproperty", true, "v1", "v2", "v3");
+    assertEquals("(? member of arrayproperty) and (? member of arrayproperty) and (? member of arrayproperty)",
+        request.getSql());
+  }
+
+  @Test
+  public void testArrayNotContains() {
+    SpiExpressionRequest request = new DefaultExpressionRequest(null);
+    expression.arrayContains(request, "arrayproperty", false, "v1", "v2", "v3");
+    assertEquals(
+        "(? not  member of arrayproperty) and (? not  member of arrayproperty) and (? not  member of arrayproperty)",
+        request.getSql());
+  }
+
+  @Test
+  public void testArrayContainsEmpty() {
+    SpiExpressionRequest request = new DefaultExpressionRequest(null);
+    expression.arrayContains(request, "arrayproperty", true);
+    assertEquals("", request.getSql());
+  }
+
+  @Test
+  public void testArrayIsEmpty() {
+    SpiExpressionRequest request = new DefaultExpressionRequest(null);
+    expression.arrayIsEmpty(request, "arrayproperty", true);
+    assertEquals("cardinality(arrayproperty) = 0", request.getSql());
+  }
+
+  @Test
+  public void testArrayIsNotEmpty() {
+    SpiExpressionRequest request = new DefaultExpressionRequest(null);
+    expression.arrayIsEmpty(request, "arrayproperty", false);
+    assertEquals("cardinality(arrayproperty) <> 0", request.getSql());
+  }
+
+  @Test
+  public void testConcat() {
+    String concat = expression.concat("property0", "separator", "property1", "suffix");
+    assertEquals("concat(property0, 'separator'||property1||'suffix')", concat);
+  }
+  
+  @Test
+  public void testConcatNullSuffix() {
+    String concat = expression.concat("property0", "separator", "property1", null);
+    assertEquals("concat(property0, 'separator'||property1)", concat);
+  }
+  
+  @Test
+  public void testJson() {
+    SpiExpressionRequest request = new DefaultExpressionRequest(null);
+    expression.json(request, "jsonproperty", "path", Op.EQ, "val");
+    assertEquals("json_value(jsonproperty, '$.path') = ? ", request.getSql());
+  }
+}