PersistenceHelper (Javadocs [I2P+ 2.13.0+]

java.lang.Object
- net.i2p.stat.PersistenceHelper

```
class PersistenceHelper
extends Object
```
Output rate data. This is used via ProfilePersistenceHelper and the output must be compatible.

Constructor Summary
Constructors
Constructor and Description
PersistenceHelper()

Constructors
Constructor and Description
`PersistenceHelper()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`add(StringBuilder buf, boolean addComments, String prefix, String name, String description, double value)` Append a double value to the buffer.
`static void`	`add(StringBuilder buf, boolean addComments, String prefix, String name, String description, long value)` Append a long value to the buffer.
`static void`	`addDate(StringBuilder buf, boolean addComments, String prefix, String name, String description, long value)` Append a date value to the buffer.
`static void`	`addTime(StringBuilder buf, boolean addComments, String prefix, String name, String description, long value)` Append a time duration to the buffer.
`static double`	`getDouble(Properties props, String prefix, String name)` Read a double value from properties.
`static int`	`getInt(Properties props, String prefix, String name)` Read an integer value from properties.
`static long`	`getLong(Properties props, String prefix, String name)` Read a long value from properties.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- PersistenceHelper
```
PersistenceHelper()
```

Method Detail

add

public static final void add(StringBuilder buf,
                             boolean addComments,
                             String prefix,
                             String name,
                             String description,
                             double value)

Append a double value to the buffer.

Parameters:: buf - the buffer to append to; addComments - if true, prepend a comment line instead of the value; prefix - property key prefix; name - property key suffix; description - description of the value (used as comment when addComments is true); value - the value

add

public static final void add(StringBuilder buf,
                             boolean addComments,
                             String prefix,
                             String name,
                             String description,
                             long value)

Append a long value to the buffer.

Parameters:: buf - the buffer to append to; addComments - if true, prepend a comment line instead of the value; prefix - property key prefix; name - property key suffix; description - description of the value (used as comment when addComments is true); value - the value

addDate

public static final void addDate(StringBuilder buf,
                                 boolean addComments,
                                 String prefix,
                                 String name,
                                 String description,
                                 long value)

Append a date value to the buffer.

Parameters:: buf - the buffer to append to; addComments - if true, prepend a comment line instead of the value; prefix - property key prefix; name - property key suffix; description - description of the value (used as comment when addComments is true); value - the epoch millisecond date value

addTime

public static final void addTime(StringBuilder buf,
                                 boolean addComments,
                                 String prefix,
                                 String name,
                                 String description,
                                 long value)

Append a time duration to the buffer.

Parameters:: buf - the buffer to append to; addComments - if true, prepend a comment line instead of the value; prefix - property key prefix; name - property key suffix; description - description of the value (used as comment when addComments is true); value - the duration in milliseconds

getDouble

public static final double getDouble(Properties props,
                                     String prefix,
                                     String name)

Read a double value from properties.

Parameters:: props - properties to read from; prefix - property key prefix; name - property key suffix
Returns:: 0 on error

getInt

public static final int getInt(Properties props,
                               String prefix,
                               String name)

Read an integer value from properties.

Parameters:: props - properties to read from; prefix - property key prefix; name - property key suffix
Returns:: non-negative, returns 0 on error

getLong

public static final long getLong(Properties props,
                                 String prefix,
                                 String name)

Read a long value from properties.

Parameters:: props - properties to read from; prefix - property key prefix; name - property key suffix
Returns:: non-negative, returns 0 on error

Class PersistenceHelper

Constructor Summary