| |
| <!DOCTYPE HTML> |
| <html lang="" > |
| <head> |
| <meta charset="UTF-8"> |
| <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> |
| <title>Filter Expressions ยท ActiveMQ Artemis Documentation</title> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge" /> |
| <meta name="description" content=""> |
| <meta name="generator" content="GitBook 3.2.3"> |
| |
| |
| |
| |
| <link rel="stylesheet" href="gitbook/style.css"> |
| |
| |
| |
| |
| <link rel="stylesheet" href="gitbook/gitbook-plugin-highlight/website.css"> |
| |
| |
| |
| <link rel="stylesheet" href="gitbook/gitbook-plugin-search/search.css"> |
| |
| |
| |
| <link rel="stylesheet" href="gitbook/gitbook-plugin-fontsettings/website.css"> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <meta name="HandheldFriendly" content="true"/> |
| <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"> |
| <meta name="apple-mobile-web-app-capable" content="yes"> |
| <meta name="apple-mobile-web-app-status-bar-style" content="black"> |
| <link rel="apple-touch-icon-precomposed" sizes="152x152" href="gitbook/images/apple-touch-icon-precomposed-152.png"> |
| <link rel="shortcut icon" href="gitbook/images/favicon.ico" type="image/x-icon"> |
| |
| |
| <link rel="next" href="persistence.html" /> |
| |
| |
| <link rel="prev" href="wildcard-syntax.html" /> |
| |
| |
| </head> |
| <body> |
| |
| <div class="book"> |
| <div class="book-summary"> |
| |
| |
| <div id="book-search-input" role="search"> |
| <input type="text" placeholder="Type to search" /> |
| </div> |
| |
| |
| <nav role="navigation"> |
| |
| |
| |
| <ul class="summary"> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class="chapter " data-level="1.1" data-path="./"> |
| |
| <a href="./"> |
| |
| |
| Introduction |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.2" data-path="notice.html"> |
| |
| <a href="notice.html"> |
| |
| |
| Legal Notice |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.3" data-path="preface.html"> |
| |
| <a href="preface.html"> |
| |
| |
| Preface |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.4" data-path="project-info.html"> |
| |
| <a href="project-info.html"> |
| |
| |
| Project Info |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.5" data-path="versions.html"> |
| |
| <a href="versions.html"> |
| |
| |
| Versions |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.6" data-path="messaging-concepts.html"> |
| |
| <a href="messaging-concepts.html"> |
| |
| |
| Messaging Concepts |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.7" data-path="architecture.html"> |
| |
| <a href="architecture.html"> |
| |
| |
| Architecture |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.8" data-path="using-server.html"> |
| |
| <a href="using-server.html"> |
| |
| |
| Using the Server |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.9" data-path="upgrading.html"> |
| |
| <a href="upgrading.html"> |
| |
| |
| Upgrading |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.10" > |
| |
| <span> |
| |
| |
| Address |
| |
| </span> |
| |
| |
| |
| <ul class="articles"> |
| |
| |
| <li class="chapter " data-level="1.10.1" data-path="address-model.html"> |
| |
| <a href="address-model.html"> |
| |
| |
| Model |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.10.2" data-path="address-settings.html"> |
| |
| <a href="address-settings.html"> |
| |
| |
| Settings |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| |
| </ul> |
| |
| </li> |
| |
| <li class="chapter " data-level="1.11" data-path="protocols-interoperability.html"> |
| |
| <a href="protocols-interoperability.html"> |
| |
| |
| Protocols and Interoperability |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.12" data-path="amqp.html"> |
| |
| <a href="amqp.html"> |
| |
| |
| AMQP |
| |
| </a> |
| |
| |
| |
| <ul class="articles"> |
| |
| |
| <li class="chapter " data-level="1.12.1" data-path="amqp-broker-connections.html"> |
| |
| <a href="amqp-broker-connections.html"> |
| |
| |
| Broker Connections |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| |
| </ul> |
| |
| </li> |
| |
| <li class="chapter " data-level="1.13" data-path="mqtt.html"> |
| |
| <a href="mqtt.html"> |
| |
| |
| MQTT |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.14" data-path="stomp.html"> |
| |
| <a href="stomp.html"> |
| |
| |
| STOMP |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.15" data-path="openwire.html"> |
| |
| <a href="openwire.html"> |
| |
| |
| OpenWire |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.16" data-path="core.html"> |
| |
| <a href="core.html"> |
| |
| |
| Core |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.17" data-path="jms-core-mapping.html"> |
| |
| <a href="jms-core-mapping.html"> |
| |
| |
| Mapping JMS Concepts to the Core API |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.18" data-path="using-jms.html"> |
| |
| <a href="using-jms.html"> |
| |
| |
| Using JMS |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.19" data-path="client-classpath.html"> |
| |
| <a href="client-classpath.html"> |
| |
| |
| The Client Classpath |
| |
| </a> |
| |
| |
| |
| <ul class="articles"> |
| |
| |
| <li class="chapter " data-level="1.19.1" data-path="client-classpath-jms.html"> |
| |
| <a href="client-classpath-jms.html"> |
| |
| |
| JMS |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.19.2" data-path="client-classpath-jakarta.html"> |
| |
| <a href="client-classpath-jakarta.html"> |
| |
| |
| Jakarta |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| |
| </ul> |
| |
| </li> |
| |
| <li class="chapter " data-level="1.20" data-path="examples.html"> |
| |
| <a href="examples.html"> |
| |
| |
| Examples |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.21" data-path="wildcard-routing.html"> |
| |
| <a href="wildcard-routing.html"> |
| |
| |
| Routing Messages With Wild Cards |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.22" data-path="wildcard-syntax.html"> |
| |
| <a href="wildcard-syntax.html"> |
| |
| |
| Wildcard Syntax |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter active" data-level="1.23" data-path="filter-expressions.html"> |
| |
| <a href="filter-expressions.html"> |
| |
| |
| Filter Expressions |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.24" data-path="persistence.html"> |
| |
| <a href="persistence.html"> |
| |
| |
| Persistence |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.25" data-path="configuring-transports.html"> |
| |
| <a href="configuring-transports.html"> |
| |
| |
| Configuring Transports |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.26" data-path="config-reload.html"> |
| |
| <a href="config-reload.html"> |
| |
| |
| Configuration Reload |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.27" data-path="connection-ttl.html"> |
| |
| <a href="connection-ttl.html"> |
| |
| |
| Detecting Dead Connections |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.28" data-path="slow-consumers.html"> |
| |
| <a href="slow-consumers.html"> |
| |
| |
| Detecting Slow Consumers |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.29" data-path="network-isolation.html"> |
| |
| <a href="network-isolation.html"> |
| |
| |
| Avoiding Network Isolation |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.30" data-path="critical-analysis.html"> |
| |
| <a href="critical-analysis.html"> |
| |
| |
| Detecting Broker Issues (Critical Analysis) |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.31" data-path="transaction-config.html"> |
| |
| <a href="transaction-config.html"> |
| |
| |
| Resource Manager Configuration |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.32" data-path="flow-control.html"> |
| |
| <a href="flow-control.html"> |
| |
| |
| Flow Control |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.33" data-path="send-guarantees.html"> |
| |
| <a href="send-guarantees.html"> |
| |
| |
| Guarantees of sends and commits |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.34" data-path="undelivered-messages.html"> |
| |
| <a href="undelivered-messages.html"> |
| |
| |
| Message Redelivery and Undelivered Messages |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.35" data-path="message-expiry.html"> |
| |
| <a href="message-expiry.html"> |
| |
| |
| Message Expiry |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.36" data-path="large-messages.html"> |
| |
| <a href="large-messages.html"> |
| |
| |
| Large Messages |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.37" data-path="paging.html"> |
| |
| <a href="paging.html"> |
| |
| |
| Paging |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.38" data-path="scheduled-messages.html"> |
| |
| <a href="scheduled-messages.html"> |
| |
| |
| Scheduled Messages |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.39" data-path="last-value-queues.html"> |
| |
| <a href="last-value-queues.html"> |
| |
| |
| Last-Value Queues |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.40" data-path="non-destructive-queues.html"> |
| |
| <a href="non-destructive-queues.html"> |
| |
| |
| Non-Destructive Queues |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.41" data-path="ring-queues.html"> |
| |
| <a href="ring-queues.html"> |
| |
| |
| Ring Queues |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.42" data-path="retroactive-addresses.html"> |
| |
| <a href="retroactive-addresses.html"> |
| |
| |
| Retroactive Addresses |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.43" data-path="exclusive-queues.html"> |
| |
| <a href="exclusive-queues.html"> |
| |
| |
| Exclusive Queues |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.44" data-path="message-grouping.html"> |
| |
| <a href="message-grouping.html"> |
| |
| |
| Message Grouping |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.45" data-path="consumer-priority.html"> |
| |
| <a href="consumer-priority.html"> |
| |
| |
| Consumer Priority |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.46" data-path="pre-acknowledge.html"> |
| |
| <a href="pre-acknowledge.html"> |
| |
| |
| Extra Acknowledge Modes |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.47" data-path="management.html"> |
| |
| <a href="management.html"> |
| |
| |
| Management |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.48" data-path="management-console.html"> |
| |
| <a href="management-console.html"> |
| |
| |
| Management Console |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.49" data-path="metrics.html"> |
| |
| <a href="metrics.html"> |
| |
| |
| Metrics |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.50" data-path="security.html"> |
| |
| <a href="security.html"> |
| |
| |
| Security |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.51" data-path="masking-passwords.html"> |
| |
| <a href="masking-passwords.html"> |
| |
| |
| Masking Passwords |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.52" data-path="broker-plugins.html"> |
| |
| <a href="broker-plugins.html"> |
| |
| |
| Broker Plugins |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.53" data-path="resource-limits.html"> |
| |
| <a href="resource-limits.html"> |
| |
| |
| Resource Limits |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.54" data-path="jms-bridge.html"> |
| |
| <a href="jms-bridge.html"> |
| |
| |
| The JMS Bridge |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.55" data-path="client-reconnection.html"> |
| |
| <a href="client-reconnection.html"> |
| |
| |
| Client Reconnection and Session Reattachment |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.56" data-path="diverts.html"> |
| |
| <a href="diverts.html"> |
| |
| |
| Diverting and Splitting Message Flows |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.57" data-path="core-bridges.html"> |
| |
| <a href="core-bridges.html"> |
| |
| |
| Core Bridges |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.58" data-path="transformers.html"> |
| |
| <a href="transformers.html"> |
| |
| |
| Transformers |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.59" data-path="duplicate-detection.html"> |
| |
| <a href="duplicate-detection.html"> |
| |
| |
| Duplicate Message Detection |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.60" data-path="clusters.html"> |
| |
| <a href="clusters.html"> |
| |
| |
| Clusters |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.61" data-path="federation.html"> |
| |
| <a href="federation.html"> |
| |
| |
| Federation |
| |
| </a> |
| |
| |
| |
| <ul class="articles"> |
| |
| |
| <li class="chapter " data-level="1.61.1" data-path="federation-address.html"> |
| |
| <a href="federation-address.html"> |
| |
| |
| Address Federation |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.61.2" data-path="federation-queue.html"> |
| |
| <a href="federation-queue.html"> |
| |
| |
| Queue Federation |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| |
| </ul> |
| |
| </li> |
| |
| <li class="chapter " data-level="1.62" data-path="ha.html"> |
| |
| <a href="ha.html"> |
| |
| |
| High Availability and Failover |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.63" data-path="connection-routers.html"> |
| |
| <a href="connection-routers.html"> |
| |
| |
| Connection Routers |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.64" data-path="graceful-shutdown.html"> |
| |
| <a href="graceful-shutdown.html"> |
| |
| |
| Graceful Server Shutdown |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.65" data-path="libaio.html"> |
| |
| <a href="libaio.html"> |
| |
| |
| Libaio Native Libraries |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.66" data-path="thread-pooling.html"> |
| |
| <a href="thread-pooling.html"> |
| |
| |
| Thread management |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.67" data-path="web-server.html"> |
| |
| <a href="web-server.html"> |
| |
| |
| Embedded Web Server |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.68" data-path="logging.html"> |
| |
| <a href="logging.html"> |
| |
| |
| Logging |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.69" data-path="rest.html"> |
| |
| <a href="rest.html"> |
| |
| |
| REST Interface |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.70" data-path="embedding-activemq.html"> |
| |
| <a href="embedding-activemq.html"> |
| |
| |
| Embedding the Broker |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.71" data-path="karaf.html"> |
| |
| <a href="karaf.html"> |
| |
| |
| Apache Karaf |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.72" data-path="tomcat.html"> |
| |
| <a href="tomcat.html"> |
| |
| |
| Apache Tomcat |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.73" data-path="spring-integration.html"> |
| |
| <a href="spring-integration.html"> |
| |
| |
| Spring Integration |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.74" data-path="cdi-integration.html"> |
| |
| <a href="cdi-integration.html"> |
| |
| |
| CDI Integration |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.75" data-path="intercepting-operations.html"> |
| |
| <a href="intercepting-operations.html"> |
| |
| |
| Intercepting Operations |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.76" data-path="data-tools.html"> |
| |
| <a href="data-tools.html"> |
| |
| |
| Data Tools |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.77" data-path="activation-tools.html"> |
| |
| <a href="activation-tools.html"> |
| |
| |
| Activation Tools |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.78" data-path="maven-plugin.html"> |
| |
| <a href="maven-plugin.html"> |
| |
| |
| Maven Plugin |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.79" data-path="unit-testing.html"> |
| |
| <a href="unit-testing.html"> |
| |
| |
| Unit Testing |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.80" data-path="perf-tuning.html"> |
| |
| <a href="perf-tuning.html"> |
| |
| |
| Troubleshooting and Performance Tuning |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.81" data-path="perf-tools.html"> |
| |
| <a href="perf-tools.html"> |
| |
| |
| Performance Tools |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.82" data-path="configuration-index.html"> |
| |
| <a href="configuration-index.html"> |
| |
| |
| Configuration Reference |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| <li class="chapter " data-level="1.83" data-path="restart-sequence.html"> |
| |
| <a href="restart-sequence.html"> |
| |
| |
| Restart Sequence |
| |
| </a> |
| |
| |
| |
| </li> |
| |
| |
| |
| |
| <li class="divider"></li> |
| |
| <li> |
| <a href="https://www.gitbook.com" target="blank" class="gitbook-link"> |
| Published with GitBook |
| </a> |
| </li> |
| </ul> |
| |
| |
| </nav> |
| |
| |
| </div> |
| |
| <div class="book-body"> |
| |
| <div class="body-inner"> |
| |
| |
| |
| <div class="book-header" role="navigation"> |
| |
| |
| <!-- Title --> |
| <h1> |
| <i class="fa fa-circle-o-notch fa-spin"></i> |
| <a href="." >Filter Expressions</a> |
| </h1> |
| </div> |
| |
| |
| |
| |
| <div class="page-wrapper" tabindex="-1" role="main"> |
| <div class="page-inner"> |
| |
| <div id="book-search-results"> |
| <div class="search-noresults"> |
| |
| <section class="normal markdown-section"> |
| |
| <h1 id="filter-expressions">Filter Expressions</h1> |
| <p>Apache ActiveMQ Artemis provides a powerful filter language based on a subset of the |
| SQL 92 expression syntax.</p> |
| <p>It is the same as the syntax used for JMS & Jakarta Messaging selectors, but the |
| predefined identifiers are different. For documentation on JMS selector syntax |
| please the JavaDoc for <a href="https://docs.oracle.com/javaee/7/api/javax/jms/Message.html" target="_blank"><code>javax.jms.Message</code></a>. |
| For the corresponding Jakarta Messaging JavaDoc see <a href="https://jakarta.ee/specifications/messaging/3.0/apidocs/jakarta/jms/message" target="_blank"><code>jakarta.jms.Message</code></a></p> |
| <p>Filter expressions are used in several places in Apache ActiveMQ Artemis</p> |
| <ul> |
| <li><p>Predefined Queues. When pre-defining a queue, in |
| <code>broker.xml</code> in either the core or jms configuration a filter |
| expression can be defined for a queue. Only messages that match the |
| filter expression will enter the queue.</p> |
| </li> |
| <li><p>Core bridges can be defined with an optional filter expression, only |
| matching messages will be bridged (see <a href="core-bridges.html">Core Bridges</a>).</p> |
| </li> |
| <li><p>Diverts can be defined with an optional filter expression, only |
| matching messages will be diverted (see <a href="diverts.html">Diverts</a>).</p> |
| </li> |
| <li><p>Filter are also used programmatically when creating consumers, |
| queues and in several places as described in <a href="management.html">management</a>.</p> |
| </li> |
| </ul> |
| <p>There are some differences between JMS selector expressions and Apache ActiveMQ Artemis |
| core filter expressions. Whereas JMS selector expressions operate on a |
| JMS message, Apache ActiveMQ Artemis core filter expressions operate on a core message.</p> |
| <p>The following identifiers can be used in a core filter expressions to |
| refer to attributes of the core message in an expression:</p> |
| <ul> |
| <li><p><code>AMQPriority</code>. To refer to the priority of a message. Message |
| priorities are integers with valid values from <code>0 - 9</code>. <code>0</code> is the |
| lowest priority and <code>9</code> is the highest. E.g. |
| <code>AMQPriority = 3 AND animal = 'aardvark'</code></p> |
| </li> |
| <li><p><code>AMQExpiration</code>. To refer to the expiration time of a message. The |
| value is a long integer.</p> |
| </li> |
| <li><p><code>AMQDurable</code>. To refer to whether a message is durable or not. The |
| value is a string with valid values: <code>DURABLE</code> or <code>NON_DURABLE</code>.</p> |
| </li> |
| <li><p><code>AMQTimestamp</code>. The timestamp of when the message was created. The |
| value is a long integer.</p> |
| </li> |
| <li><p><code>AMQSize</code>. The size of a message in bytes. The value is an integer.</p> |
| </li> |
| </ul> |
| <p>Any other identifiers used in core filter expressions will be assumed to |
| be properties of the message.</p> |
| <p>The JMS and Jakarta Messaging specs state that a String property should not |
| get converted to a numeric when used in a selector. So for example, if a |
| message has the <code>age</code> property set to <code>String</code> <code>21</code> then the following selector |
| should not match it: <code>age > 18</code>. Since Apache ActiveMQ Artemis supports STOMP |
| clients which can only send messages with string properties, that restriction |
| is a bit limiting. Therefore, if you want your filter expressions to |
| auto-convert <code>String</code> properties to the appropriate number type, just prefix it |
| with <code>convert_string_expressions:</code>. If you changed the filter expression in the |
| previous example to be <code>convert_string_expressions:age > 18</code>, then it would |
| match the aforementioned message.</p> |
| <p>The JMS and Jakarta Messaging specs also state that property identifiers (and |
| therefore the identifiers which are valid for use in a filter expression) are |
| an:</p> |
| <blockquote> |
| <p>unlimited-length sequence of letters and digits, the first of which must be |
| a letter. A letter is any character for which the method |
| <code>Character.isJavaLetter</code> returns <code>true</code>. This includes <code>_</code> and <code>$</code>. A letter |
| or digit is any character for which the method <code>Character.isJavaLetterOrDigit</code> |
| returns <code>true</code>.</p> |
| </blockquote> |
| <p>This constraint means that hyphens (i.e. <code>-</code>) cannot be used. However, this |
| constraint can be overcome by using the <code>hyphenated_props:</code> prefix. For |
| example, if a message had the <code>foo-bar</code> property set to <code>0</code> then the filter |
| expression <code>hyphenated_props:foo-bar = 0</code> would match it.</p> |
| <h2 id="xpath">XPath</h2> |
| <p>Apache ActiveMQ Artemis also supports special <a href="https://en.wikipedia.org/wiki/XPath" target="_blank">XPath</a> |
| filters which operate on the <em>body</em> of a message. The body must be XML. To |
| use an XPath filter use this syntax:</p> |
| <pre><code>XPATH '<xpath-expression>' |
| </code></pre><p>XPath filters are supported with and between producers and consumers using |
| the following protocols:</p> |
| <ul> |
| <li>OpenWire JMS </li> |
| <li>Core (and Core JMS)</li> |
| <li>STOMP</li> |
| <li>AMQP</li> |
| </ul> |
| <p>Since XPath applies to the body of the message and requires parsing of XML |
| <strong>it may be significantly slower</strong> than normal filters.</p> |
| <p>Large messages are <strong>not</strong> supported.</p> |
| <p>The XML parser used for XPath is configured with these default "features":</p> |
| <ul> |
| <li><code>http://xml.org/sax/features/external-general-entities</code>: <code>false</code></li> |
| <li><code>http://xml.org/sax/features/external-parameter-entities</code>: <code>false</code></li> |
| <li><code>http://apache.org/xml/features/disallow-doctype-decl</code>: <code>true</code></li> |
| </ul> |
| <p>However, in order to deal with any implementation-specific issues the features |
| can be customized by using system properties starting with the |
| <code>org.apache.activemq.documentBuilderFactory.feature:</code> prefix, e.g.:</p> |
| <pre><code>-Dorg.apache.activemq.documentBuilderFactory.feature:http://xml.org/sax/features/external-general-entities=true |
| </code></pre> |
| |
| </section> |
| |
| </div> |
| <div class="search-results"> |
| <div class="has-results"> |
| |
| <h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1> |
| <ul class="search-results-list"></ul> |
| |
| </div> |
| <div class="no-results"> |
| |
| <h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1> |
| |
| </div> |
| </div> |
| </div> |
| |
| </div> |
| </div> |
| |
| </div> |
| |
| |
| |
| <a href="wildcard-syntax.html" class="navigation navigation-prev " aria-label="Previous page: Wildcard Syntax"> |
| <i class="fa fa-angle-left"></i> |
| </a> |
| |
| |
| <a href="persistence.html" class="navigation navigation-next " aria-label="Next page: Persistence"> |
| <i class="fa fa-angle-right"></i> |
| </a> |
| |
| |
| |
| </div> |
| |
| <script> |
| var gitbook = gitbook || []; |
| gitbook.push(function() { |
| gitbook.page.hasChanged({"page":{"title":"Filter Expressions","level":"1.23","depth":1,"next":{"title":"Persistence","level":"1.24","depth":1,"path":"persistence.md","ref":"persistence.md","articles":[]},"previous":{"title":"Wildcard Syntax","level":"1.22","depth":1,"path":"wildcard-syntax.md","ref":"wildcard-syntax.md","articles":[]},"dir":"ltr"},"config":{"plugins":[],"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"pluginsConfig":{"highlight":{},"search":{},"lunr":{"maxIndexSize":1000000,"ignoreSpecialCharacters":false},"sharing":{"facebook":true,"twitter":true,"google":false,"weibo":false,"instapaper":false,"vk":false,"all":["facebook","google","twitter","weibo","instapaper"]},"fontsettings":{"theme":"white","family":"sans","size":2},"theme-default":{"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"showLevel":false}},"github":"apache/activemq-artemis","theme":"default","githubHost":"https://github.com/","pdf":{"pageNumbers":true,"fontSize":12,"fontFamily":"Arial","paperSize":"a4","chapterMark":"pagebreak","pageBreaksBefore":"/","margin":{"right":62,"left":62,"top":56,"bottom":56}},"structure":{"langs":"LANGS.md","readme":"README.md","glossary":"GLOSSARY.md","summary":"SUMMARY.md"},"variables":{},"version":"2.24.0","title":"ActiveMQ Artemis Documentation","links":{"home":"http://activemq.apache.org/artemis","issues":"https://issues.apache.org/jira/browse/ARTEMIS","contribute":"http://activemq.apache.org/contributing.html"},"gitbook":"3.x.x","description":"ActiveMQ Artemis User Guide and Reference Documentation"},"file":{"path":"filter-expressions.md","mtime":"2022-08-08T16:17:30.696Z","type":"markdown"},"gitbook":{"version":"3.2.3","time":"2022-08-08T16:18:17.607Z"},"basePath":".","book":{"language":""}}); |
| }); |
| </script> |
| </div> |
| |
| |
| <script src="gitbook/gitbook.js"></script> |
| <script src="gitbook/theme.js"></script> |
| |
| |
| <script src="gitbook/gitbook-plugin-search/search-engine.js"></script> |
| |
| |
| |
| <script src="gitbook/gitbook-plugin-search/search.js"></script> |
| |
| |
| |
| <script src="gitbook/gitbook-plugin-lunr/lunr.min.js"></script> |
| |
| |
| |
| <script src="gitbook/gitbook-plugin-lunr/search-lunr.js"></script> |
| |
| |
| |
| <script src="gitbook/gitbook-plugin-sharing/buttons.js"></script> |
| |
| |
| |
| <script src="gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script> |
| |
| |
| |
| </body> |
| </html> |
| |
