danny0405 commented on a change in pull request #2162:
URL: https://github.com/apache/calcite/pull/2162#discussion_r705847704
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File path: looker.md
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+<!--
+{% comment %}
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements. See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to you under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+{% endcomment %}
+-->
+# Looker's branch of Calcite
+
+This document describes how to develop Looker's branch of Calcite.
+
+Do not merge to Calcite's master branch.
+
+## Development
+
+For development, build and deploy to your local Maven repository:
+
+```
+cd calcite
+./gradlew publishToMavenLocal
+```
+
+On the HT side, edit `looker-libs/build.gradle`:
+
+```
+ compile "org.apache.calcite:calcite-core:1.xx.x-SNAPSHOT"
+ compile "org.apache.calcite:calcite-babel:1.xx.x-SNAPSHOT"
+```
+
+## Release
+
+Release will have a name like `1.21.1-looker` (if the most
+recent official Calcite release is `1.21`) and have a git tag
+`calcite-1.21.1-looker`.
+
+You should make it from a branch that differs from Calcite's
+`master` branch in only minor ways:
+* Cherry-pick commits from the previous `calcite-x.xx.x-looker`
+ release that set up Looker's repositories (or, if you prefer,
+ rebase the previous release branch onto the latest master)
+* If necessary, include one or two commits for short-term fixes, but
+ log [JIRA cases](https://issues.apache.org/jira/browse/CALCITE) to
+ get them into `master`.
+
+In Calcite's `gradle.properties`, update the value of
+`calcite.version` to the release name (something like
+`1.22.1-looker`) and commit.
+
+Define Looker's Nexus repository in your `~/.gradle/init.gradle.kts`
+file:
+
+```kotlin
+allprojects {
+ plugins.withId("maven-publish") {
+ configure<PublishingExtension> {
+ repositories {
+ maven {
+ name = "lookerNexus"
+ val baseUrl = "https://nexusrepo.looker.com";
+ val releasesUrl = "$baseUrl/repository/maven-releases"
+ val snapshotsUrl = "$baseUrl/repository/maven-snapshots"
+ val release =
!project.version.toString().endsWith("-SNAPSHOT")
+ // val release = project.hasProperty("release")
+ url = uri(if (release) releasesUrl else snapshotsUrl)
+ credentials {
+ username = "xxx"
+ password = "xxx"
+ }
+ }
+ }
+ }
+ }
+}
+```
+
+In the above fragment, replace the values of the `username` and
+`password` properties with the secret credentials.
+
+*NOTE* This fragment *must* be in a file outside of your git sandbox.
+If the file were in the git sandbox, it would be too easy to
+accidentally commit the secret credentials and expose them on a
+public site.
+
+Publish:
Review comment:
What, is this branch only for Looker ?
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