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DB2/Z Support cleanup of stored procedures with dependent procedures #82

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DB2/Z Support cleanup of stored procedures with dependent procedures #82

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23 changes: 14 additions & 9 deletions flyway-database-db2zos/src/main/java/org/flywaydb/community/database/db2z/DB2ZSchema.java
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Original file line number Diff line number Diff line change
Expand Up @@ -141,16 +141,19 @@ protected void doClean() throws SQLException {
jdbcTemplate.execute(dropStatement);
}

// procedures
for (String dropStatement : generateDropStatementsForProcedures()) {
jdbcTemplate.execute(dropStatement);
}

// triggers
for (String dropStatement : generateDropStatementsForTriggers()) {
jdbcTemplate.execute(dropStatement);
}

// drop procedures by iteratively dropping procedues without dependents (until no procedures are remaining)
do {
dropStatements = generateDropStatementsForProceduresWithoutDependents();
for (String dropStatement : dropStatements) {
jdbcTemplate.execute(dropStatement);
}
} while (dropStatements.size() > 0);

for (Function function : allFunctions()) {
function.drop();
}
Expand All @@ -176,14 +179,16 @@ private String getSqlId() {
}

/**
* Generates DROP statements for the procedures in this schema.
* Generates DROP statements for the procedures in this schema that do not have dependent procedures.
*
* @return The drop statements.
* @throws SQLException when the statements could not be generated.
*/
private List<String> generateDropStatementsForProcedures() throws SQLException {
String dropProcGenQuery = "select rtrim(NAME) from SYSIBM.SYSROUTINES where CAST_FUNCTION = 'N' " +
" and ROUTINETYPE = 'P' and SCHEMA = '" + name + "' and OWNER = '" + this.getSqlId() + "'";
private List<String> generateDropStatementsForProceduresWithoutDependents() throws SQLException {
String dropProcGenQuery = "select rtrim(sr.NAME) from SYSIBM.SYSROUTINES sr where sr.CAST_FUNCTION = 'N'" +
" and sr.ROUTINETYPE = 'P' and sr.SCHEMA = '" + name + "' and sr.OWNER = '" + this.getSqlId() + "'" +
" and not exists ( select * from SYSIBM.SYSDEPENDENCIES sd where sd.BNAME=sr.NAME" +
" and sd.BSCHEMA=sr.SCHEMA and sd.DTYPE='O' )";
return buildDropStatements("DROP PROCEDURE", dropProcGenQuery);
}

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