dropdb

#!/bin/bash

#
# Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
#
# Licensed under the Universal Permissive License v 1.0 as shown
# at http://oss.oracle.com/licenses/upl
#

declare -r dfltDSN="sampledb"
declare -r dfltUID="appuser"

declare sname=`basename "$0"`
declare dsn="${dfltDSN}"
declare username="${dfltUID}"
declare password=""
declare connstr=""
declare cs=""
declare dir=""

usage()
{
    echo
    echo "Usage:"
    echo
    echo "    ${sname} [-dsn dsn] [-uid username] -pwd password [-cs]"
    echo
    echo "Drops the objects for the mobiledemo database. Parameters are"
    echo "the DSN (connectable) name, the username and password. If the DSN"
    echo "/ connectable is a client/server one you must also specify '-cs'."
    echo
    echo "If you are using the default DSN (sampledb/sampledbCS) or the"
    echo "default username (appuser) then the corresponding parameter can"
    echo "be omitted."
    echo
    exit 99
}

canonPath()
{
    local cwd
    local nwd
    local nfn

    cwd=`pwd -P`
    nwd=`dirname "$1"`
    nfn=`basename "$1"`
    cd "${nwd}" >/dev/null 2>&1
    if [ $? -ne 0 ]
    then
        cd "${cwd}"
        return 1
    fi
    nwd=`pwd -P`
    if [ -d "${nfn}" ]
    then
        cd "${nfn}" >/dev/null 2>&1
        if [ $? -ne 0 ]
        then
            cd "${cwd}"
            return 1
        fi
        nwd=`pwd -P`
        echo "${nwd}"
    else
        echo "${nwd}/${nfn}"
    fi
    cd "${cwd}"
    return 0
}

parseArgs()
{
    local -i foundDSN=1
    local -i foundUID=1
    local -i foundPWD=1
    local -i foundCS=1

    while [ $# -gt 0 ]
    do
        case "$1" in
            "-dsn" )
                shift
                if [ \( ${foundDSN} -eq 0 \) -o \( $# -lt 1 \) ]
                then
                    usage
                fi
                dsn="$1"
                foundDSN=0
                ;;
            "-uid" )
                shift
                if [ \( ${foundUID} -eq 0 \) -o \( $# -lt 1 \) ]
                then
                    usage
                fi
                username="$1"
                foundUID=0
                ;;
            "-pwd" )
                shift
                if [ \( ${foundPWD} -eq 0 \) -o \( $# -lt 1 \) ]
                then
                    usage
                fi
                password="$1"
                foundPWD=0
                ;;
            "-cs" )
                if [ ${foundCS} -eq 0 ]
                then
                    usage
                fi
                cs="CS"
                foundCS=0
                ;;
            * )
                usage
                ;;
        esac
        shift
    done

    if [ ${foundPWD} -eq 1 ]
    then
        usage
    fi

    if [ \( ${foundDSN} -eq 1 \) -a \( ${foundCS} -eq 0 \) ]
    then
        dsn="${dsn}${cs}"
    fi
    connstr="DSN=${dsn};UID=${username};PWD=${password}"

    return 0
}

dropDB()
{
    echo
    echo "Dropping database objects..."
    echo
    ttIsql${cs} -f sql/dr_schema.sql -connstr "${connstr}"
    if [ $? -ne 0 ]
    then
        return 1
    fi

    return 0
}

parseArgs "$@"

dir=`canonPath "$0"`
dir=`dirname "${dir}"`
cd "${dir}"

dropDB
exit $?