org.h2.util

Class StatementBuilder

java.lang.Object

org.h2.util.StatementBuilder

public class StatementBuilder
extends Object

A utility class to build a statement. In addition to the methods supported by StringBuilder, it allows to add a text only in the second iteration. This simplified constructs such as:

 StringBuilder buff = new StringBuilder();
 for (int i = 0; i < args.length; i++) {
     if (i > 0) {
         buff.append(", ");
     }
     buff.append(args[i]);
 }
 

to

 StatementBuilder buff = new StatementBuilder();
 for (String s : args) {
     buff.appendExceptFirst(", ");
     buff.append(a);
 }

Constructor Summary

Constructors

Constructor and Description
StatementBuilder() Create a new builder.
StatementBuilder(String string) Create a new builder.

Method Summary

Methods

Modifier and Type	Method and Description
StatementBuilder	append(char c) Append a character.
StatementBuilder	append(long x) Append a number.
StatementBuilder	append(String s) Append a text.
void	appendExceptFirst(String s) Append a text, except when this method is called the first time.
void	appendOnlyFirst(String s) Append a text, but only if appendExceptFirst was never called.
int	length() Get the length.
StatementBuilder	resetCount() Reset the loop counter.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

StatementBuilder

public StatementBuilder()

Create a new builder.

StatementBuilder

public StatementBuilder(String string)

Create a new builder.

Parameters:

string - the initial string

Method Detail

append

public StatementBuilder append(String s)

Append a text.

Parameters:

s - the text to append

Returns:

itself

append

public StatementBuilder append(char c)

Append a character.

Parameters:

c - the character to append

Returns:

itself

append

public StatementBuilder append(long x)

Append a number.

Parameters:

x - the number to append

Returns:

itself

resetCount

public StatementBuilder resetCount()

Reset the loop counter.

Returns:

itself

appendOnlyFirst

public void appendOnlyFirst(String s)

Append a text, but only if appendExceptFirst was never called.

Parameters:

s - the text to append

appendExceptFirst

public void appendExceptFirst(String s)

Append a text, except when this method is called the first time.

Parameters:

s - the text to append

toString

public String toString()

Overrides:

toString in class Object

length

public int length()

Get the length.

Returns:

the length