Class Command (0.18.2)

public abstract class Command

This abstract class concerns itself with representing a method of matching a specific statement and translating it to a form that Spanner understands. The user should call is() to determine whether it matches before trying to translate.

Inheritance

java.lang.Object > Command

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Methods

getCommands(String sql, Connection connection, JSONObject commandMetadataJSON)

public static List<Command> getCommands(String sql, Connection connection, JSONObject commandMetadataJSON)

The list of all subcommands to this command. When subclassing this, make sure to add the new command to the below list, if applicable (i.e.: if you want it to be run). Commands may also be specified via Dynamic Commands, which are defined from an input JSON file. These commands precede the hard-coded ones in execution.

Parameters

Name	Description
`sql`	`String` The SQL command to be translated.
`connection`	`Connection` The connection currently in use.
`commandMetadataJSON`	`org.json.simple.JSONObject`

Returns

Type	Description
`List<Command>`	A list of all Command subclasses.

Fields

matcher

protected Matcher matcher

Field Value

Type	Description
`Matcher`

sql

protected String sql

Field Value

Type	Description
`String`

Methods

getPattern()

protected abstract Pattern getPattern()

The pattern expected by this command: is() will only return true if it matches this pattern.

Returns

Type	Description
`Pattern`	The pattern apposite (in relation to) the command.

is()

public boolean is()

Returns

Type	Description
`boolean`	True if the SQL statement matches the pattern.

translate()

public abstract String translate()

Returns

Type	Description
`String`	The equivalent Spanner statement for the specified SQL statement.