Package org.apache.sis.internal.storage.csv

Class StoreProvider.Peek

java.lang.Object

org.apache.sis.internal.storage.wkt.FirstKeywordPeek

org.apache.sis.internal.storage.csv.StoreProvider.Peek

Enclosing class:

StoreProvider

private static final class StoreProvider.Peek
extends FirstKeywordPeek

The object to use for verifying if the first keyword is the expected one.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final StoreProvider.Peek	INSTANCE	The unique instance.
private static final String	KEYWORD	The expected keyword after spaces removal.

Fields inherited from class org.apache.sis.internal.storage.wkt.FirstKeywordPeek

ACCEPT, COMMENT, IGNORE, maxLength, REJECT

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Peek()	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
protected ProbeResult	forKeyword(char[] keyword, int length)	Returns the value to be returned by StoreProvider.probeContent(StorageConnector) for the given WKT keyword.
protected int	isKeywordChar(int c)	Returns whether the given character is valid for the keyword.
protected boolean	isPostKeyword(int c)	Returns true if the given first non-white character after the keyword is one of the expected characters.

Methods inherited from class org.apache.sis.internal.storage.wkt.FirstKeywordPeek

getAuxiliaryPath, probeContent, probeContent

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

static final StoreProvider.Peek INSTANCE

The unique instance.

KEYWORD

private static final String KEYWORD

The expected keyword after spaces removal.

See Also:

• Constant Field Values

Constructor Details

Peek

private Peek()

Creates a new instance.

Method Details

isKeywordChar

protected int isKeywordChar(int c)

Returns whether the given character is valid for the keyword. This implementation accepts '@' in addition of the alphanumeric characters accepted by the parent class.

Overrides:

isKeywordChar in class FirstKeywordPeek

Parameters:

c - the character to test.

Returns:

FirstKeywordPeek.ACCEPT if the given character should be accepted, FirstKeywordPeek.REJECT if the character is not valid for the keyword, or FirstKeywordPeek.IGNORE if the character should be accepted but not stored.

isPostKeyword

protected boolean isPostKeyword(int c)

Returns true if the given first non-white character after the keyword is one of the expected characters.

Specified by:

isPostKeyword in class FirstKeywordPeek

Parameters:

c - the first non-white character after the keyword, or -1 if we reached the end of stream.

Returns:

true if the given character is one of the expected post-keyword characters.

forKeyword

protected ProbeResult forKeyword(char[] keyword,
 int length)

Returns the value to be returned by StoreProvider.probeContent(StorageConnector) for the given WKT keyword. This method changes the case to match the one used in the keywords map, then verify if the keyword that we found is one of the known WKT keywords. Keywords with the "CRS" suffix are WKT 2 while keywords with the "CS" suffix are WKT 1.

Specified by:

forKeyword in class FirstKeywordPeek

Parameters:

keyword - the first keyword found in the input. May be null if length is zero.

length - number of valid characters in keyword.

Returns:

ProbeResult.SUPPORTED if the given storage seems to be readable.