net.sf.jailer.database

Class StatementBuilder

java.lang.Object

net.sf.jailer.database.StatementBuilder

public class StatementBuilder
extends Object

Builds compact SQL-statements of the pattern: HEAD ITEM {SEPARATOR ITEM}* TERMINATOR. (for example, an 'INSERT' with a 'values'-list)

Author:

Ralf Wisser

Constructor Summary

Constructors

Constructor and Description
StatementBuilder(int maxBodySize) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	append(String head, String item, String separator, String terminator) Appends an item.
String	build() Builds the SQL-statement and resets the builder.
int	getMaxBodySize() Gets the maximal size of a body-list.
boolean	isAppendable(String head) Checks whether an item is appendable to previously appended items.
boolean	isAppendable(String head, String item) Checks whether an item is appendable to previously appended items.
boolean	isEmpty() Checks if builder is empty.
int	size() Returns the size of the current statement.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StatementBuilder

public StatementBuilder(int maxBodySize)

Constructor.

Parameters:

maxBodySize - the maximal size of a body-list

Method Detail

isAppendable

public boolean isAppendable(String head,
                   String item)

Checks whether an item is appendable to previously appended items.

Parameters:

head - the statements head

item - the item

Returns:

true iff item is appendable

isAppendable

public boolean isAppendable(String head)

Checks whether an item is appendable to previously appended items.

Parameters:

head - the statements head

Returns:

true iff item is appendable

build

public String build()

Builds the SQL-statement and resets the builder.

Returns:

the SQL-statement

append

public void append(String head,
          String item,
          String separator,
          String terminator)

Appends an item.

Parameters:

head - same head as previously appended, if any

item - the item

separator - separates the items

terminator - terminates the statement

isEmpty

public boolean isEmpty()

Checks if builder is empty.

Returns:

true if builder is empty

size

public int size()

Returns the size of the current statement.

getMaxBodySize

public int getMaxBodySize()

Gets the maximal size of a body-list.