2017-01-26 21:24:14 +01:00
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# xbib Contextual Query Language Compiler for Java
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2016-11-25 00:06:17 +01:00
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image:https://api.travis-ci.org/xbib/cql.svg[title="Build status", link="https://travis-ci.org/xbib/cql/"]
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image:https://img.shields.io/sonar/http/nemo.sonarqube.com/org.xbib%3Acql/coverage.svg?style=flat-square[title="Coverage", link="https://sonarqube.com/dashboard/index?id=org.xbib%3Acql"]
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image:https://maven-badges.herokuapp.com/maven-central/org.xbib/cql/badge.svg[title="Maven Central", link="http://search.maven.org/#search%7Cga%7C1%7Cxbib%20cql"]
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image:https://img.shields.io/badge/License-Apache%202.0-blue.svg[title="Apache License 2.0", link="https://opensource.org/licenses/Apache-2.0"]
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image:https://img.shields.io/twitter/url/https/twitter.com/xbib.svg?style=social&label=Follow%20%40xbib[title="Twitter", link="https://twitter.com/xbib"]
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2017-01-26 21:24:14 +01:00
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CQL, the Contextual Query Language, is a formal language for representing queries to information retrieval systems.
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Its objective is to combine simplicity with expressiveness, to accommodate the range of complexity from
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very simple queries to very complex. CQL queries are intended to be human readable and writable, intuitive,
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and expressive.
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This Java implementation can parse and generate CQL syntax, and translates CQL to Elasticsearch query language.
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It also support extensive query options, filter queries and faceting, with breadcrumb state support
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(checkboxes to add or remove facte values from a query).
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More about CQL can be found under
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link:http://docs.oasis-open.org/search-ws/searchRetrieve/v1.0/os/part5-cql/searchRetrieve-v1.0-os-part5-cql.html[the searchRetrieve 1.0 CQL specification].
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== License
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Copyright (C) 2012 Jörg Prante
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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you may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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2016-11-25 00:06:17 +01:00
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