The following example presents the file gfcpp-cache8000.dtd, which defines the XML used by the GemFire native client for declarative caching. The DTD file identifies the valid element tags that may be present in your XML file, the attributes that correspond to each element, and the valid values for the elements and attributes.

<?xml version="1.0" encoding="UTF-8"?>

<!--

This is the XML DTD for the GemFire Native Client declarative caching XML file.  

The contents of a declarative XML file correspond to APIs found in the
Gemfire Native Client product, more specifically in the
Cache.hpp and Region.hpp files in the product include directory

A declarative caching XML file is used to populate a Cache
when it is created.

-->


<!--
The "client-cache" element is the root element of the declarative cache file.
This element configures a GemFire Native Client Cache and describes the 
root regions it contains, if any.
-->

<!ELEMENT client-cache (pool*, root-region*, region*, pdx?)>
<!ATTLIST client-cache
  endpoints CDATA #IMPLIED
  redundancy-level CDATA #IMPLIED
>

<!--
A "locator" element specifies the host and port that a server locator is listening on
-->
<!ELEMENT locator EMPTY>
<!ATTLIST locator
  host  CDATA #REQUIRED
  port  CDATA #REQUIRED
>

<!--
A "server" element specifies the host and port that a cache server is listening on
-->
<!ELEMENT server EMPTY>
<!ATTLIST server
  host  CDATA #REQUIRED
  port  CDATA #REQUIRED
>

<!-- A "pdx" element specifies the properties related to pdx types -->
<!ELEMENT pdx EMPTY>
<!ATTLIST 
  ignore-unread-fields  (false | true) #IMPLIED
  read-serialized (false | true) #IMPLIED
  >

<!--
A "pool" element specifies a client-server connection pool.
-->
<!ELEMENT pool (locator+|server+)>
<!ATTLIST pool
  free-connection-timeout        CDATA #IMPLIED
  load-conditioning-interval     CDATA #IMPLIED
  min-connections                CDATA #IMPLIED
  max-connections                CDATA #IMPLIED
  retry-attempts                 CDATA #IMPLIED
  idle-timeout                   CDATA #IMPLIED
  ping-interval                  CDATA #IMPLIED
  name                           CDATA #REQUIRED
  read-timeout                   CDATA #IMPLIED
  server-group                   CDATA #IMPLIED
  socket-buffer-size             CDATA #IMPLIED
  subscription-enabled                  (false | true) #IMPLIED
  subscription-message-tracking-timeout CDATA #IMPLIED
  subscription-ack-interval             CDATA #IMPLIED
  subscription-redundancy        CDATA #IMPLIED
  statistic-interval             CDATA #IMPLIED
  pr-single-hop-enabled          (true | false) #IMPLIED
  thread-local-connections       (false | true) #IMPLIED
  multiuser-authentication          (false | true) #IMPLIED
>

<!--
A root-region" element describes a root region whose entries and
subregions will be stored in memory.
Note that the "name" attribute specifies the simple name of the region;
it cannot contain a "/".
-->

<!ELEMENT root-region (region-attributes?, region*)>
<!ATTLIST root-region
  name CDATA #REQUIRED
>


<!--
A "region" element describes a region (and its entries) in GemFire
Native Client cache. Note that the "name" attribute specifies the simple
name of the region; it cannot contain a "/".
-->

<!ELEMENT region (region-attributes?, region*)>
<!ATTLIST region
  name CDATA #REQUIRED
  refid CDATA #IMPLIED
>



<!--
A "region-attributes" element describes the attributes of a region to
be created. For more details see the RegionFactory header in the
product include directory
-->

<!ELEMENT region-attributes ((region-time-to-live |
  region-idle-time | entry-time-to-live | entry-idle-time |
  partition-resolver |
  cache-loader | cache-listener | cache-writer | persistence-manager)*)>
<!ATTLIST region-attributes
  caching-enabled (true | TRUE | false | FALSE) #IMPLIED
  cloning-enabled (true | TRUE | false | FALSE) #IMPLIED
  scope (local | distributed-no-ack | distributed-ack ) #IMPLIED
  initial-capacity CDATA #IMPLIED
  load-factor CDATA #IMPLIED
  concurrency-level CDATA #IMPLIED
  lru-entries-limit CDATA #IMPLIED
  disk-policy (none | overflows | persist ) #IMPLIED
  endpoints CDATA #IMPLIED
  client-notification (true | TRUE | false | FALSE) #IMPLIED
  pool-name CDATA #IMPLIED
  concurrency-checks-enabled (true | TRUE | false | FALSE) #IMPLIED
  id CDATA #IMPLIED
  refid CDATA #IMPLIED
>






<!--
A "region-time-to-live" element specifies a Region's time to live
-->

<!ELEMENT region-time-to-live (expiration-attributes)>



<!--
A "region-idle-time" element specifies a Region's idle time
-->

<!ELEMENT region-idle-time (expiration-attributes)>



<!--
A "entry-time-to-live" element specifies a Region's entries' time to
live
-->

<!ELEMENT entry-time-to-live (expiration-attributes)>



<!--
A "entry-idle-time" element specifies a Region's entries' idle time
-->

<!ELEMENT entry-idle-time (expiration-attributes)>


<!--
A "properties" element specifies a persistence properties 
-->

<!ELEMENT properties (property*)>

<!-- 
An "expiration-attributes" element describes expiration 
-->

<!ELEMENT expiration-attributes EMPTY>
<!ATTLIST expiration-attributes
  timeout CDATA #REQUIRED
  action (invalidate | destroy | local-invalidate | local-destroy) #IMPLIED
>



<!--
A "cache-loader" element describes a region's CacheLoader
-->

<!ELEMENT cache-loader  EMPTY >
<!ATTLIST cache-loader 
 library-name CDATA #IMPLIED
 library-function-name CDATA #REQUIRED
>



<!--
A "cache-listener" element describes a region's CacheListener
-->

<!ELEMENT cache-listener EMPTY>
<!ATTLIST cache-listener 
 library-name CDATA #IMPLIED
 library-function-name CDATA #REQUIRED
>



<!--
A "cache-writer" element describes a region's CacheListener
-->

<!ELEMENT cache-writer EMPTY>
<!ATTLIST cache-writer 
 library-name CDATA #IMPLIED
 library-function-name CDATA #REQUIRED
>

<!--
A "partition-resolver" element describes a region's PartitionResolver
-->

<!ELEMENT partition-resolver EMPTY>
<!ATTLIST partition-resolver 
 library-name CDATA #IMPLIED
 library-function-name CDATA #REQUIRED
>

<!--
A "persistence-manager" element describes a region's persistence feature
-->

<!ELEMENT persistence-manager (properties)>
<!ATTLIST persistence-manager 
 library-name CDATA #IMPLIED
 library-function-name CDATA #REQUIRED
>



<!--
A "property" element describes a persistence property
-->

<!ELEMENT property EMPTY>
<!ATTLIST property 
 name CDATA #REQUIRED
 value CDATA #REQUIRED
>