AisExtractor (ais 0.6.15 API)

java.lang.Object
- au.gov.amsa.ais.AisExtractor

```
public class AisExtractor
extends java.lang.Object
```
Utility class for extracting parts of an ais message as unsigned integers, signed integers or strings.

Author:

dxm

Constructor Summary

Constructors
Constructor Description

AisExtractor(java.lang.String message, java.lang.Integer minLength, int padBits)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getMessageId()`	Returns the message id field (the first 6 characters of the decoded message).
`int`	`getSignedValue(int from, int to)`	Returns a signed integer value using the bits from character position start to position stop in the decoded message.
`java.lang.String`	`getString(int from, int to)`
`int`	`getValue(int from, int to)`	Returns an unsigned integer value using the bits from character position start to position stop in the decoded message.

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

- Constructor Detail
  - AisExtractor
```
public AisExtractor(java.lang.String message,
                    java.lang.Integer minLength,
                    int padBits)
```
    Constructor. If message once decoded is less than minLength then throws AisParseException.
    
    Parameters:
    
    message -
    
    minLength -
- Method Detail
  - getMessageId
```
public int getMessageId()
```
    Returns the message id field (the first 6 characters of the decoded message).
    
    Returns:
  - getValue
```
public int getValue(int from,
                    int to)
```
    Returns an unsigned integer value using the bits from character position start to position stop in the decoded message.
    
    Parameters:
    
    from -
    
    to -
    
    Returns:
  - getSignedValue
```
public int getSignedValue(int from,
                          int to)
```
    Returns a signed integer value using the bits from character position start to position stop in the decoded message.
    
    Parameters:
    
    from -
    
    to -
    
    Returns:
  - getString
```
public java.lang.String getString(int from,
                                  int to)
```