[OLINGO-342] Fixed typos in interfaces

lib/server-api/src/main/java/org/apache/olingo/server/api/uri/UriParameter.java

@@ -38,7 +38,7 @@ public interface UriParameter {
   /**
    * @return If the parameters value is a expression and expression is returned, otherwise null
    */
-  public Expression getExression();
+  public Expression getExpression();
 
   /**
    * @return Name of the parameter
@@ -48,6 +48,6 @@ public interface UriParameter {
   /**
    * @return Name of the referenced property when referential constrains are used
    */
-  public String getRefencedProperty();
+  public String getReferencedProperty();
 
 }

lib/server-core/src/main/java/org/apache/olingo/server/core/uri/UriParameterImpl.java

@@ -60,7 +60,7 @@ public class UriParameterImpl implements UriParameter {
   }
 
   @Override
-  public Expression getExression() {
+  public Expression getExpression() {
     return expression;
   }
 
@@ -70,7 +70,7 @@ public class UriParameterImpl implements UriParameter {
   }
 
   @Override
-  public String getRefencedProperty() {
+  public String getReferencedProperty() {
     return referencedProperty;
   }
 

lib/server-test/src/test/java/org/apache/olingo/server/core/uri/UriResourceImplTest.java

@@ -66,7 +66,7 @@ public class UriResourceImplTest {
     assertEquals("Text", impl.getText());
     assertEquals("A", impl.getName());
     assertEquals("@A", impl.getAlias());
-    assertEquals(expression, impl.getExression());
+    assertEquals(expression, impl.getExpression());
   }
 
   @Test

lib/server-test/src/test/java/org/apache/olingo/server/core/uri/testutil/ResourceValidator.java

@@ -128,7 +128,7 @@ public class ResourceValidator implements TestValidator {
 
     return new FilterValidator()
         .setEdm(edm)
-        .setExpression(function.getParameters().get(index).getExression())
+        .setExpression(function.getParameters().get(index).getExpression())
         .setValidator(this);
   }
 
@@ -368,7 +368,7 @@ public class ResourceValidator implements TestValidator {
     UriResourceWithKeysImpl info = (UriResourceWithKeysImpl) uriPathInfo;
     List<UriParameter> keyPredicates = info.getKeyPredicates();
     assertEquals(name, keyPredicates.get(index).getName());
-    assertEquals(refencedProperty, keyPredicates.get(index).getRefencedProperty());
+    assertEquals(refencedProperty, keyPredicates.get(index).getReferencedProperty());
     return this;
 
   }