package liquibase.sqlgenerator.core;

 import liquibase.database.Database;

 import liquibase.database.core.H2Database;

 import liquibase.database.core.MySQLDatabase;

 import liquibase.exception.DatabaseException;

 import liquibase.exception.UnexpectedLiquibaseException;

 import liquibase.sql.Sql;

 import liquibase.sql.UnparsedSql;

 import liquibase.sqlgenerator.SqlGeneratorChain;

 import liquibase.statement.core.GetViewDefinitionStatement;

 public class GetViewDefinitionGeneratorInformationSchemaViews extends GetViewDefinitionGenerator {

     @Override

     public int getPriority() {

         return PRIORITY_DATABASE;

     }

     @Override

     public boolean supports(GetViewDefinitionStatement statement, Database database) {

         return database instanceof H2Database || database instanceof MySQLDatabase;

     }

     @Override

     public Sql[] generateSql(GetViewDefinitionStatement statement, Database database,

             SqlGeneratorChain sqlGeneratorChain) {

         try {

             return new Sql[] { new UnparsedSql(

                     "SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME = '"

                             + statement.getViewName() + "' AND TABLE_SCHEMA='"

                             + database.convertRequestedSchemaToSchema(statement.getSchemaName()) + "'") };

         } catch (DatabaseException e) {

             throw new UnexpectedLiquibaseException(e);

         }

     }

 }