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The official Peppol Directory (PD;, TOOP Directory software (The Once-Only Project; and DE4A Directory software (Digital Europe 4 All;

It is split into the following sub-projects (all require Java 11 or newer):

  • phoss-directory-indexer - the PD indexer part
  • phoss-directory-publisher - the PD publisher web application
  • phoss-directory-client - a client library to be added to SMP servers to force indexing in the PD
  • phoss-directory-searchapi - a client library for easier use of the Directory search REST API (since v0.7.2)

Previous modules:

  • phoss-directory-businesscard - the common Business Card API - until v0.12.3; then moved to com.helger.peppol:peppol-directory-businesscard in

  • Production version is available at (for Peppol)

    • It can only handle participants registered at the SML
    • For the indexing REST API, a client certificate (SMP production) is needed
  • Test version is available at

    • It can only handle participants registered at the SMK
    • For the indexing REST API, a client certificate (SMP test) is needed
  • A TOOP version is available at

    • It can only handle participants registered at the SMK at a specific DNS zone
    • For the indexing REST API, no client certificate is needed
  • A DE4A version is available at

    • It can only handle participants registered at the SML at a specific DNS zone
    • For the indexing REST API, no client certificate is needed
  • A Java library to be used in SMPs to communicate with the PD is available

  • phoss SMP Server supports starting with version 4.1.2 the graphical editing of Business Card incl. the necessary /businesscard API.

Building requirements

To build the PD software you need at least Java 1.8 and Apache Maven 3.x.

Additionally to the contained projects you MAY need the latest SNAPSHOT of ph-oton as part of your build environment.

PD Client

The PD client is a small Java library that uses Apache HttpClient to connect to an arbitrary phoss Directory Indexer to perform all the allowed operations (get, create/update, delete).

Client Configuration resolution

Note: this is new in v0.9.0.

The PD client uses the file for configuration. The file is also evaluated for backwards-compatibility reasons but with lower priority.

See for the new resolution logic.

Client Configuration properties

Note: the configuration properties were heavily renamed in v0.10.0. Previous old names are shown in brackets.

The following options are supported in the file:

  • pdclient.keystore.type (old: keystore.type) (since v0.6.0) - the type of the keystore. Can be JKS or PKCS12 (case insensitive). Defaults to JKS.
  • pdclient.keystore.path (old: keystore.path) - the path to the keystore where the SMP certificate is contained
  • pdclient.keystore.password (old: keystore.password) - the password to open the key store
  • pdclient.keystore.key.alias (old: keystore.key.alias) - the alias in the key store that denotes the SMP key
  • pdclient.keystore.key.password (old: keystore.key.password) - the password to open the key in the key store
  • pdclient.truststore.type (old: truststore.type) (since v0.6.0) - the type of the keystore. Can be JKS or PKCS12 (case insensitive). Defaults to JKS.
  • pdclient.truststore.path (old: truststore.path) (since v0.5.1) - the path to the trust store, where the public certificates of the phoss Directory servers are contained. Defaults to truststore/pd-client.truststore.jks
  • pdclient.truststore.password (old: truststore.password) (since v0.5.1) - the password to open the truststore store. Defaults to peppol
  • (old: http.proxyHost) - the HTTP proxy host for HTTP connections only. No default.
  • http.proxy.port (old: http.proxyPort) - the HTTP proxy port for http connections only. No default.
  • Removed in 0.10.0: https.proxyHost - the HTTP proxy host for https connections only. No default.
  • Removed in 0.10.0: https.proxyPort - the HTTP proxy port for https connections only. No default.
  • http.proxy.username (old: proxy.username) (since v0.6.0) - the proxy username if http or https proxy is enabled. No default.
  • http.proxy.password (old: proxy.password) (since v0.6.0) - the proxy password if http or https proxy is enabled. No default.
  • (old: (since v0.6.0) - the connection timeout in milliseconds to connect to the server. The default value is 5000 (5 seconds). A value of 0 means indefinite. A value of -1 means using the system default.
  • (old: or (since v0.10.3) - the response/request/read timeout in milliseconds to read from the server. The default value is 10000 (10 seconds). A value of 0 means indefinite. A value of -1 means using the system default.
  • https.hostname-verification.disabled (since v0.5.1) - a boolean value to indicate if https hostname verification should be disabled (true) or enabled (false). The default value is true.

Example PD client configuration file:

# Key store with SMP key (required)
pdclient.keystore.type         = jks
pdclient.keystore.path         = smp.pilot.jks
pdclient.keystore.password     = password
pdclient.keystore.key.alias    = smp.pilot
pdclient.keystore.key.password = password

# Default trust store (optional)
pdclient.truststore.type     = jks
pdclient.truststore.path     = truststore/pd-client.truststore.jks
pdclient.truststore.password = peppol

# TLS settings
https.hostname-verification.disabled = false

PD Indexer

The PD Indexer is a REST component that is responsible for taking indexing requests from SMPs and processes them in a queue (Peppol SMP client certificate required). Only the Peppol participant identifiers are taken and the PD Indexer is responsible for querying the respective SMP data directly. Therefore the respective SMP must have the appropriate Extension element of the service group filled with the business information metadata as required by PD. Please see the PD specification for a detailed description of the required data format as well as for the REST interface.

PD Publisher

The PD Publisher is the publicly accessible web site with listing and search functionality for certain participants.

News and noteworthy

  • v0.13.0 - 2023-11-13
  • v0.12.3 - 2023-10-27
    • Fixed the name of the attribute for the client certificate retrieval (jakarta.)
    • Added special handling for Peppol Wildcard identifiers on the UI
  • v0.12.2 - 2023-08-24
    • Updated to ph-oton 9.2.0
    • Updated code lists to v8.6
  • v0.12.1 - 2023-08-16
    • Introducing class PDResultListMarshaller in favour of PDSearchAPI(Reader|Validator|Writer)
    • Added a BusinessCard JSON export
  • v0.12.0 - 2023-02-25
    • Using Java 11 as the baseline
    • Using Servlet API 5.0.0 as the baseline: JakartaEE 9, Java 11+, Apache Tomcat v10.0.x, Jetty 11.x
    • Updated to Jersey 3.1.1
    • Updated to ph-commons 11
    • Updated the known names to eDEC Code List v8.3
  • v0.11.0 - 2022-12-19
    • Updated to Lucene 8.x
  • v0.10.5 - 2022-11-25
    • Improved logging of indexation
    • SMP client configuration became more resilient
  • v0.10.4 - 2022-11-14
    • Added new configuration parameter to disable the TLS certificate checks for the SMP client
  • v0.10.3 - 2022-08-17
    • Updated to Apache Http Client v5.x
    • Updated to ph-web 9.7.1
    • Fixed an error in the REST API with the "name" parameter when multilingual names are used
  • v0.10.2 - 2022-03-28
    • Removed the code for the handling of objects marked as deleted
    • Improved the owner check upon deletion
  • v0.10.1 - 2022-03-09
    • Added export of participant IDs with metadata
  • v0.10.0 - 2022-03-06
    • Only the SP owning a Participant can delete it. That implies, that upon certificate change the simple deletion will not work. It is recommended to first index the participant, so that the new certificate is used, and than delete it with the new certificate.
    • Added an Admin page to manually delete a participant without an owner check
    • Showing metadata information on participant details, if the admin user is logged in
    • Removed the "SMP implementations" page
    • Added a possibility to hide or customize the "Contact us" page
    • Changed the PD Client configuration properties, to start with pdclient. and align the HTTP properties with SMP client configuration
      • keystore.type is now pdclient.keystore.type
      • keystore.path is now pdclient.keystore.path
      • keystore.password is now pdclient.keystore.password
      • keystore.key.alias is now pdclient.keystore.key.alias
      • keystore.key.password is now pdclient.keystore.key.password
      • truststore.type is now pdclient.truststore.type
      • truststore.path is now pdclient.truststore.path
      • truststore.password is now pdclient.truststore.password
      • http.proxyHost is now
      • http.proxyPort is now http.proxy.port
      • proxy.username is now http.proxy.username
      • proxy.password is now http.proxy.password
      • is now
      • is now
      • https.proxyHost is no longer supported
      • https.proxyPort is no longer supported
    • Fixed the default search background image URL
  • v0.9.10 - 2022-02-24
    • Prepare for internal cleanup to get rid of the legacy "deleted" flag
  • v0.9.9 - 2021-12-21
  • v0.9.8 - 2021-12-14
  • v0.9.7 - 2021-12-10
  • v0.9.6 - 2021-11-02
    • Improved support for JSON API in Business Card
  • v0.9.5 - 2021-03-22
    • Updated to ph-commons 10
    • Updated to peppol-commons 8.4.0
    • Improved web UI customizability
  • v0.9.4 - 2021-02-01
    • Fixed initialization order issue
  • v0.9.3 - 2021-02-01
    • Updated to ph-commons 9.5.4
    • Updated to ph-dns 9.5.2
    • Updated to Jersey 2.32
    • Reduced lock contention
  • v0.9.2 - 2020-09-24
    • Increased customizability
  • v0.9.1 - 2020-09-18
    • Updated to Jakarta JAXB 2.3.3
  • v0.9.0 - 2020-09-16
    • Updated to ph-commons 9.4.8
    • Changed the way how the configuration system works
  • v0.8.8 - 2020-08-30
    • Updated to ph-commons 9.4.7
    • Updated to ph-oton 8.2.6
    • Updated to peppol-commons 8.1.7
    • Using Java 8 date and time classes for JAXB created classes
  • v0.8.7 - 2020-05-27
    • Updated to ph-commons 9.4.4
    • Updated to new Maven groupIds
    • Improved logging
    • Improved resilience on identifier handling for stored entries
  • v0.8.6 - 2020-02-19
    • URL decoding participant identifiers on indexation
    • Updated to ph-commons 9.4.0
  • v0.8.5 - 2020-02-16
    • Finalized PEPPOL -> Peppol change
    • Added registration date to the export data (see issue #45)
    • Updated to peppol-commons 8.x
    • Removed support for old PKI v2
    • Made the identifier factory customizable to avoid duplicate entries
    • Improved the internal Admin interface a bit
    • Added possibility to automatically purge unwanted duplicate entries
    • Updated the underlying UI libraries
    • The lists of known document type IDs and process ID were updated
    • Details about document types are now part of the export (see issue #46)
    • Added the possibility to export search result as XML (see issue #43)
    • Enforcing the PDClient proxy configuration to be part of PDHttpClientSettings
    • Improved internal error resilience
    • Fixed a validation that broken the daily export because of invalid PD data
    • Updated to ph-web 9.1.9
    • Changed the internal PDClient HTTP configuration API to use HttpClientSettings (backwards incompatible change)
    • The PDClient now checks for the key alias in a case insensitive manner (improved resilience)
  • v0.8.4 - 2020-01-24
    • Updated to Jersey 2.30
    • The Directory client has no more default truststore path and password
    • The Directory client configuration can now be read from the path denoted by the environment variable DIRECTORY_CLIENT_CONFIG
    • Updated the static texts changing PEPPOL to Peppol
  • v0.8.3 - 2020-01-08
    • Added logo in the left top (using configuration property webapp.applogo.image.path)
    • Setting Content-Length HTTP header for the downloads
    • Made FavIcons customizable
    • Added rate limit for search API (using configuration property rest.limit.requestspersecond)
  • v0.8.2 - 2019-10-14
    • Added support to download all Business Cards as CSV
    • Added support to download all Business Cards as XML but without the document types (see issue #42)
    • Class PDBusinessCard got a default JSON representation
    • Updated to Jersey 2.29.1
    • Added support to download all Participant IDs only as XML, JSON and CSV
  • v0.8.1 - 2019-07-29
    • Updated to Jersey 2.29
    • PDClientConfiguration can now be re-initialized during runtime
    • Known document type identifiers and process identifiers can now be used (see issue #13)
    • Extended XML export to include the new document types (see issue #41)
    • Added page to see the current Index Queue
  • v0.8.0 - 2019-06-27
    • Renamed project peppol-directory to phoss-directory
    • Maven artifact IDs changed from peppol-directory* to phoss-directory*
    • Updated to peppol-commons 7.0.0
    • Downgraded to Lucene 7.7.2
    • Fixed an issue with total-result-count and paging in the REST API (see issue #39)
    • Updated to Apache httpclient 4.5.9
    • Updated to ph-oton 8.2.0
    • Added a new internal page for importing identifiers
    • The internal format for exporting participant IDs was updated to be used in the import
  • v0.7.2 - 2019-05-13
    • Added new submodule peppol-directory-searchapi with basic elements for using the query API and the response documents
    • Updated default truststore of peppol-directory-client
    • Updated to Lucene 8.1.0
  • v0.7.1 - 2019-03-17
    • Added new method PDBusinessCardHelper.parseBusinessCard
    • Updated to Lucene 8.0.0
  • v0.7.0 - 2018-12-02
    • Added a link on the UI to download all business cards as XML
    • Fixed the build timestamp property
    • Fixed error when showing ReIndex entries of non-existing participants when using ESensUrlProvider
    • Added the XML Schema for the API search results
    • Added the XML Schema for the export data
    • Added a page explaining the export data
    • Requires ph-commons 9.2.0
    • Updated UI to use Bootstrap 4.1
  • v0.6.2 - 2018-10-17
    • If more hits are present than visible, it is displayed on the UI
    • Made the available SML information objects customizable
    • Removed the configuration item - either fixed SMP or all configured SMLs are queried upon indexing
    • Updated to Apache Lucene 7.5
    • Multilingual business entities are now supported via a new Business Card XML Schema - for Belgium
    • The query API response document layout for XML was changed. name has now multiplicity 1..n instead of 1..1.
    • The query API response document layout for JSON was changed. name is now an array instead of a string.
    • Multiple parallel queries on the PD are possible.
  • v0.6.1 - 2018-06-04
    • Avoid potential exception on invalid input parameters
    • Updated to Jersey 2.27
    • Updated to Apache Lucene 7.3
    • Improved handling of multiple search parameters in name, geoinfo and additionalInfo
    • Updated to peppol-commons 6.1.0
    • Updated to ph-commons 9.1.0
    • Introduced an internal "generic business card representation"
    • An initial "export all business cards" was created
  • v0.6.0 - 2018-03-06
    • Updated to ph-commons 9.0.1
    • Updated to Apache Lucene 7.2.1
    • Fixed some issues (as #30)
    • Requires peppol-commons 6.0.1 for new OpenPEPPOL PKI v3
    • Added support for trusting an arbitrary number of client certificate issuers (for the server only)
    • Added support for configuring more than two truststores in (for the server only)
    • Added support for usage in the TOOP4EU project
    • User interface texts can be changed from "PEPPOL Directory" to something else
    • The PD client configuration now includes connection and request timeout, as well as proxy credentials
  • v0.5.1 - 2017-07-21
    • Extended PDClient to explicitly support a configurable truststore. A default truststore for the current setup is included.
    • PD client https hostname verification can now be
    • PD client has now a custom exception callback to catch exceptions in the operations and handle them outside the client.
    • Removed the JDK 6 PD client because the ECC certificates used are only supported by JDK 7 onwards. The old version is anyway in the Maven central repository.
  • v0.5.0 - 2017-07-12
    • Updated release for and

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