Package com.cedarsoftware.util.io

Class Readers

java.lang.Object

com.cedarsoftware.util.io.Readers

public class Readers
extends Object

All custom readers for json-io subclass this class. Special readers are not needed for handling user-defined classes. However, special readers are built/supplied by json-io for many of the primitive types and other JDK classes simply to allow for a more concise form.

Author:

John DeRegnaucourt ([email protected])
Copyright (c) Cedar Software LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.*

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Readers.AtomicBooleanReader
static class	Readers.AtomicIntegerReader
static class	Readers.AtomicLongReader
static class	Readers.BigDecimalReader
static class	Readers.BigIntegerReader
static class	Readers.CalendarReader
static class	Readers.ClassReader
static class	Readers.DateReader
static class	Readers.LocaleReader
static class	Readers.SqlDateReader
static class	Readers.StringBufferReader
static class	Readers.StringBuilderReader
static class	Readers.StringReader
static class	Readers.TimestampReader
static class	Readers.TimeZoneReader
static class	Readers.UUIDReader

Method Summary

Modifier and Type	Method	Description
static BigDecimal	bigDecimalFrom(Object value)
static BigInteger	bigIntegerFrom(Object value)

Methods inherited from class java.lang.Object

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

Method Detail

bigIntegerFrom

public static BigInteger bigIntegerFrom(Object value)

Parameters:

value - to be converted to BigInteger. Can be a null which will return null. Can be BigInteger in which case it will be returned as-is. Can also be String, BigDecimal, Boolean (which will be returned as BigInteger.ZERO or .ONE), byte, short, int, long, float, or double. If an unknown type is passed in, an exception will be thrown.

Returns:

a BigInteger from the given input. A best attempt will be made to support as many input types as possible. For example, if the input is a Boolean, a BigInteger of 1 or 0 will be returned. If the input is a String "", a null will be returned. If the input is a Double, Float, or BigDecimal, a BigInteger will be returned that retains the integer portion (fractional part is dropped). The input can be a Byte, Short, Integer, or Long.

bigDecimalFrom

public static BigDecimal bigDecimalFrom(Object value)

Parameters:

value - to be converted to BigDecimal. Can be a null which will return null. Can be BigDecimal in which case it will be returned as-is. Can also be String, BigInteger, Boolean (which will be returned as BigDecimal.ZERO or .ONE), byte, short, int, long, float, or double. If an unknown type is passed in, an exception will be thrown.

Returns:

a BigDecimal from the given input. A best attempt will be made to support as many input types as possible. For example, if the input is a Boolean, a BigDecimal of 1 or 0 will be returned. If the input is a String "", a null will be returned. The input can be a Byte, Short, Integer, Long, or BigInteger.