属性模型bug修复

ibzdst-core/src/main/java/cn/ibizlab/core/lite/extensions/domain/FieldModel.java

@@ -33,7 +33,7 @@ public class FieldModel {
     @JSONField(serialize = false)
     public String getColumnExp()
     {
-        if(1==field.getPhysicalField())
+        if(field.getPhysicalField()!=null && 1==field.getPhysicalField())
         {
             return columnName+" as \""+columnName.toUpperCase()+"\"";
         }
@@ -48,14 +48,14 @@ public class FieldModel {
     @JSONField(serialize = false)
     public boolean isPhysicalField()
     {
-        return 1==this.getField().getPhysicalField();
+        return this.getField().getPhysicalField()!=null && 1==this.getField().getPhysicalField();
     }
 
     @JsonIgnore
     @JSONField(serialize = false)
     public boolean isKeyField()
     {
-        return 1==this.getField().getKeyField();
+        return this.getField().getKeyField()!=null && 1==this.getField().getKeyField();
     }
 
     @JsonIgnore