RefreshMaterializedViewOracle.java

package liquibase.ext.ora.refreshmaterializedview;

import liquibase.database.Database;
import liquibase.database.core.OracleDatabase;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.sqlgenerator.core.AbstractSqlGenerator;
import liquibase.util.StringUtils;

public class RefreshMaterializedViewOracle extends AbstractSqlGenerator<RefreshMaterializedViewStatement> {

    @Override
	public boolean supports(RefreshMaterializedViewStatement dropMaterializedViewStatement, Database database) {
        return database instanceof OracleDatabase;
    }

    @Override
	public ValidationErrors validate(RefreshMaterializedViewStatement statement, Database database,
                                     SqlGeneratorChain sqlGeneratorChain) {
        ValidationErrors validationErrors = new ValidationErrors();
        validationErrors.checkRequiredField("viewName", StringUtils.trimToNull(statement.getViewName()));
        validationErrors.checkRequiredField("refreshType", StringUtils.trimToNull(statement.getRefreshType()));
        validationErrors.checkRequiredField("atomicRefresh", statement.getAtomicRefresh());
        return validationErrors;
    }

    @Override
	public Sql[] generateSql(RefreshMaterializedViewStatement statement, Database database,
                             SqlGeneratorChain sqlGeneratorChain) {
        StringBuilder sql = new StringBuilder();

        sql.append("BEGIN DBMS_MVIEW.REFRESH('");
        if ( StringUtils.trimToNull(statement.getSchemaName())  != null) {
            sql.append(statement.getSchemaName()).append(".");
        }
        sql.append(statement.getViewName());
        sql.append( "','" );

        String refreshType = statement.getRefreshType();
        if (refreshType.equals("fast")) {
            sql.append( 'F' );
        } else if (refreshType.equals("complete")) {
        		sql.append( 'C' );
        } else if (refreshType.equals("complete")) {
        		sql.append( '?' );
        }
        sql.append( "',ATOMIC_REFRESH=>" ).append( statement.getAtomicRefresh().toString().toUpperCase() );
        sql.append( "); END;" );
        return new Sql[]{new UnparsedSql(sql.toString())};
    }
}