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feat: add oracle driver to support oracle databases (#201)
* feat(client): add oracle drive to support oracle databases 110 * feat(connection): build the connection string to oracle * feat(client): add support for oracle from the client perspective * refactor(oracle): add some changes to align with the oracle standard * build(compose): add a oracle contianer to the compose file * build(makefile): add a target command to connect with oracle * feat(oracle): add parsing to build a url to connect with an oracle database * docs(readme): add some docs on how to use dblab to connect with an oracle database * feat(config): add support for the oracle driver to the config file feature feat(config): add missing files * docs(readme): add an example to describe how to add the parameters to connect with oracle through the config file * feat(form): add oracle support to the form mini tui app
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package client | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| sq "github.com/Masterminds/squirrel" | ||
| _ "github.com/sijms/go-ora/v2" | ||
| ) | ||
|
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| // oracle struct is in charge of perform all the oracle related queries. | ||
| type oracle struct{} | ||
|
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| // a validation to see if oracle is implementing databaseQuerier. | ||
| var _ databaseQuerier = (*oracle)(nil) | ||
|
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| // returns a pointer to a oracle struct, it receives an schema as a parameter. | ||
| func newOracle() *oracle { | ||
| o := oracle{} | ||
|
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| return &o | ||
| } | ||
|
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| // ShowTables returns a query to retrieve all the tables. | ||
| func (p *oracle) ShowTables() (string, []interface{}, error) { | ||
| query := "SELECT table_name FROM user_tables" | ||
| return query, nil, nil | ||
| } | ||
|
|
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| // TableStructure returns a query string to get all the relevant information of a given table. | ||
| func (p *oracle) TableStructure(tableName string) (string, []interface{}, error) { | ||
| query := sq.Select("*"). | ||
| From("user_tab_columns"). | ||
| Where(sq.Eq{"table_name": strings.ToUpper(tableName)}). | ||
| OrderBy("column_id"). | ||
| PlaceholderFormat(sq.Colon) | ||
|
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| sql, args, err := query.ToSql() | ||
| if err != nil { | ||
| return "", nil, err | ||
| } | ||
|
|
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| return sql, args, nil | ||
| } | ||
|
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| // Constraints returns all the constraints of a given table. | ||
| func (p *oracle) Constraints(tableName string) (string, []interface{}, error) { | ||
| query := sq.Select( | ||
| `constraint_name`, | ||
| `constraint_type`, | ||
| ). | ||
| From("user_constraints"). | ||
| Where(sq.Eq{"table_name": tableName}). | ||
| PlaceholderFormat(sq.Colon) | ||
|
|
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| sql, args, err := query.ToSql() | ||
| if err != nil { | ||
| return "", nil, err | ||
| } | ||
|
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| return sql, args, err | ||
| } | ||
|
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| // Indexes returns the indexes of a table. | ||
| func (p *oracle) Indexes(tableName string) (string, []interface{}, error) { | ||
| sql, args, err := sq.Select("*"). | ||
| From("all_indexes"). | ||
| Where(sq.Eq{"table_name": tableName}). | ||
| PlaceholderFormat(sq.Colon). | ||
| ToSql() | ||
| if err != nil { | ||
| return "", nil, err | ||
| } | ||
|
|
||
| return sql, args, err | ||
| } |
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