补充lite主从关系

SLN/%PUBPRJ%-core/src/main/resources/sysmodel/%SYS%.json.ftl

@@ -37,10 +37,14 @@ TARGET=PSSYSTEM
     "nullable":<#if defield.isAllowEmpty()>1<#else>0</#if>,
     "physical_field":<#if defield.isPhisicalDEField()>1<#else>0</#if>,
     "data_type":"${srfdatatype(defield.getStdDataType())}",
-    "data_length":<#if defield.getLength()?c!='-1'>${defield.getLength()?c}<#else>null</#if>,
+    <#if defield.getLength()?c!='-1'>
+    "data_length":${defield.getLength()?c},
+    </#if>
+    <#if defield.getPrecision()?c!='0'>
     "data_preci":${defield.getPrecision()?c},
-    "expression":"",
-    <#if defield.getPredefinedType()??>
+    </#if>
+    <#--"expression":"",-->
+    <#if defield.getPredefinedType()?? && defield.getPredefinedType()!=''>
     "predefined":"${defield.getPredefinedType()}",
     </#if>
     "key_field":<#if defield.isKeyDEField()==true>1<#else>0</#if>,