org.apache.torque.mojo.SchemaSqlMojo Maven / Gradle / Ivy

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Maven plugin for converting database agnostic XML files into platform specific SQL files and for examining proprietary databases via JDBC to generate database agnostic XML files
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package org.apache.torque.mojo;

import org.apache.maven.plugin.MojoExecutionException;
import org.apache.torque.util.ChangeDetector;

/**
 * Generates platform specific SQL from database agnostic XML files.

 * 

 * There are two types of SQL files created by this goal:

 * 

 * Type 1: DDL statements for creating tables, primary keys, indexes, and unique constraints. Does not contain DDL for
 * enforcing relationships between tables.

 * Type 2: DDL statements for creating and enforcing relationships between tables

 * 

 * This allows data to be imported into multiple tables concurrently. Running the first type of SQL file will create the
 * empty tables without any foreign key constraints. Data can then be loaded concurrently into the tables (using
 * optimized high speed tools if desired) without needing to worry about the order in which the tables are loaded. After
 * data has been loaded, the second type of SQL file can be run to add the relationships between the tables. As long as
 * the data set is consistent and correct, all the relationships will get created correctly.

 * 

 * The database platform to generate SQL for is determined by ${targetDatabase}. See also impex:datasql
 *
 * @goal schemasql
 * @phase generate-sources
 */
public class SchemaSqlMojo extends SqlMojoBase {

    /**
     * The directory in which the SQL will be generated.
     *
     * @parameter property="outputDir" expression="${outputDir}" default-value="${project.build.directory}/classes/sql"
     */
    @SuppressWarnings("unused")
    private String dummy1;

    /**
     * The location where the report file will be generated.
     *
     * @parameter property="reportFile" expression="${reportFile}" default-value=
     * "../../../reports/report.${project.artifactId}.sql.generation"
     */
    @SuppressWarnings("unused")
    private String dummy2;

    /**
     * The location where the context property file for velocity will be generated.
     *
     * @parameter property="contextPropertiesPath" expression="${contextPropertiesPath}"
     * default-value="${project.build.directory}/reports/context.sql.properties"
     */
    @SuppressWarnings("unused")
    private String dummy3;

    /**
     * The suffix of the generated sql files.
     *
     * @parameter property="suffix" expression="${suffix}"
     */
    @SuppressWarnings("unused")
    private String dummy4;

    protected void showConfig() {
        getLog().info("Schema Dir: " + getSchemaDir());
        getLog().info("Includes: " + getSchemaIncludes());
        getLog().info("Excludes: " + getSchemaExcludes());
    }

    /**
     * Generate SQL from schema XML files
     */
    @Override
    public void executeMojo() throws MojoExecutionException {
        updateConfiguration();
        validateConfiguration();
        generateContextProperties();
        configureTask();
        addTargetDatabaseToOutputDir();
        addTargetDatabaseToReportFile();
        showConfig();
        ChangeDetector detector = new ChangeDetector(getCanonicalReportFile(), getSchemaFiles());
        if (!detector.isChanged() && isRunOnlyOnSchemaChange()) {
            getLog().info("Schema has not changed.  Skipping generation");
            return;
        }
        getLog().info("------------------------------------------------------------------------");
        getLog().info("Generating SQL for " + getTargetDatabase() + " from schema XML files");
        getLog().info("------------------------------------------------------------------------");
        getAntTask().execute();
    }
}