package liquibase.sqlgenerator.core;

 import liquibase.database.Database;

 import liquibase.database.core.PostgresDatabase;

 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 GetViewDefinitionGeneratorPostgres extends GetViewDefinitionGenerator {

     @Override

     public int getPriority() {

         return PRIORITY_DATABASE;

     }

     @Override

     public boolean supports(GetViewDefinitionStatement statement, Database database) {

         return database instanceof PostgresDatabase;

     }

     @Override

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

             SqlGeneratorChain sqlGeneratorChain) {

         try {

             return new Sql[] { new UnparsedSql("select definition from pg_views where viewname='"

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

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

         } catch (DatabaseException e) {

             throw new UnexpectedLiquibaseException(e);

         }

     }

 }