com.pervasive.datarush.schema

Class StructuredSchemaReader

java.lang.Object

com.pervasive.datarush.schema.StructuredSchemaReader

public class StructuredSchemaReader
extends Object

Parser for text file schemas written in Pervasive DataIntegrator structured schema (.schema) format. The parser produces schema objects usable with the structured text file operators in the DataRush library.

Method Summary

Modifier and Type	Method and Description
static TextSchema	load(String schemaFile) Gets the text schema defined in the specified structured schema file.
static TextSchema	load(String schemaFile, TextTypes.StringConversion stringHandling) Gets the text schema defined in the specified structured schema file, providing hints about how string valued fields should be interpreted.
static TextSchema	loadString(String schemaString) Gets the text schema defined in the specified structured schema string.
TextSchema	parse(String schemaResource) Parse the given schema file.
TextSchema	parseString(String schemaString) Parse the given schema string.
void	setStringHandling(TextTypes.StringConversion handling) Configures the string conversion properties of the reader.

Methods inherited from class java.lang.Object

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

Method Detail

setStringHandling

public void setStringHandling(TextTypes.StringConversion handling)

Configures the string conversion properties of the reader.

Parameters:

handling - the conversion policies to use

parse

public TextSchema parse(String schemaResource)

Parse the given schema file. A collection of schema objects is created.

Parameters:

schemaResource - the name of a file containing a structured schema

Returns:

a schema object representing the one described in the source file

Throws:

DRException - thrown if any I/O or parser error occurs

parseString

public TextSchema parseString(String schemaString)

Parse the given schema string. A collection of schema objects is created.

Parameters:

schemaString - the name of a string containing a structured schema

Returns:

a schema object representing the one described in the source string

Throws:

DRException - thrown if any I/O or parser error occurs

loadString

public static TextSchema loadString(String schemaString)

Gets the text schema defined in the specified structured schema string.

Parameters:

schemaString - the string to load

Returns:

the defined schema

load

public static TextSchema load(String schemaFile)

Gets the text schema defined in the specified structured schema file. String valued fields will not trim leading and trailing whitespace and the empty string will be interpreted as a null value.

Parameters:

schemaFile - the file to load

Returns:

the defined schema

load

public static TextSchema load(String schemaFile,
                              TextTypes.StringConversion stringHandling)

Gets the text schema defined in the specified structured schema file, providing hints about how string valued fields should be interpreted.

Parameters:

schemaFile - the file to load

stringHandling - the string conversion policies to use whitespace removed

Returns:

the defined schema