com.fasterxml.jackson.dataformat.csv

Enum CsvSchema.ColumnType

java.lang.Object

java.lang.Enum<CsvSchema.ColumnType>

com.fasterxml.jackson.dataformat.csv.CsvSchema.ColumnType

All Implemented Interfaces:

Serializable, Comparable<CsvSchema.ColumnType>

Enclosing class:

CsvSchema

public static enum CsvSchema.ColumnType
extends Enum<CsvSchema.ColumnType>

Enumeration that defines optional type indicators that can be passed with schema. If used type is used to determine type of JsonToken that column values are exposed as.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ARRAY Value will be a multi-value sequence, separated by array element separator.
BOOLEAN Value is expected to be a boolean ("true", "false") String, or "null", or empty String (equivalent to null).
NUMBER Value should be a number, but literals "null", "true" and "false" are also understood, and an empty String is considered null.
NUMBER_OR_STRING Value is taken to be a number (if it matches valid JSON number formatting rules), literal (null, true or false) or String, depending on best match.
STRING Default type if not explicitly defined; value will be presented as VALUE_STRING by parser, that is, no type-inference is performed, and value is not trimmed.
STRING_OR_LITERAL Value is considered to be a String, except that tokens "null", "true" and "false" are recognized as matching tokens and reported as such; and values are trimmed (leading/trailing white space)

Method Summary

Modifier and Type	Method and Description
static CsvSchema.ColumnType	valueOf(String name) Returns the enum constant of this type with the specified name.
static CsvSchema.ColumnType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

STRING

public static final CsvSchema.ColumnType STRING

Default type if not explicitly defined; value will be presented as VALUE_STRING by parser, that is, no type-inference is performed, and value is not trimmed.

Note that this type allows coercion into array, if higher level application calls JsonParser.isExpectedStartArrayToken(), unlike more explicit types.

STRING_OR_LITERAL

public static final CsvSchema.ColumnType STRING_OR_LITERAL

Value is considered to be a String, except that tokens "null", "true" and "false" are recognized as matching tokens and reported as such; and values are trimmed (leading/trailing white space)

NUMBER

public static final CsvSchema.ColumnType NUMBER

Value should be a number, but literals "null", "true" and "false" are also understood, and an empty String is considered null. Values are also trimmed (leading/trailing white space) Other non-numeric Strings may cause parsing exception.

NUMBER_OR_STRING

public static final CsvSchema.ColumnType NUMBER_OR_STRING

Value is taken to be a number (if it matches valid JSON number formatting rules), literal (null, true or false) or String, depending on best match. Values are also trimmed (leading/trailing white space)

BOOLEAN

public static final CsvSchema.ColumnType BOOLEAN

Value is expected to be a boolean ("true", "false") String, or "null", or empty String (equivalent to null). Values are trimmed (leading/trailing white space). Values other than indicated above may result in an exception.

Since:

2.5

ARRAY

public static final CsvSchema.ColumnType ARRAY

Value will be a multi-value sequence, separated by array element separator. Element type itself may be any scalar type (that is, number or String) and will not be optimized. Separator may be overridden on per-column basis.

Note that this type is used for generic concept of multiple values, and not specifically to match Java arrays: data-binding may match such columns to Collections as well, or even other types as necessary.

Since:

2.5

Method Detail

values

public static CsvSchema.ColumnType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (CsvSchema.ColumnType c : CsvSchema.ColumnType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static CsvSchema.ColumnType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null