NullValue (Resin 4.0.s170329)

java.lang.Object
- com.caucho.quercus.env.Value
- - com.caucho.quercus.env.NullValue

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

DefaultValue, NullThisValue, QuercusClass, UnexpectedValue, UnsetValue
```
public class NullValue
extends Value
implements java.io.Serializable
```
Represents a PHP null value.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

static NullValue NULL
- Fields inherited from class com.caucho.quercus.env.Value
  L, NULL_ARGS, NULL_VALUE_ARRAY

Fields
Modifier and Type	Field and Description
`static NullValue`	`NULL`

Constructor Summary

Constructors
Modifier Constructor and Description

protected NullValue()

Constructors
Modifier	Constructor and Description
`protected`	`NullValue()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Value`	`add(long lLong)` Adds to the following value.
`Value`	`append(Value index, Value value)` Sets the array value, returning the new array, e.g.
`StringValue`	`appendTo(BinaryBuilderValue sb)` Append to a binary builder.
`StringValue`	`appendTo(LargeStringBuilderValue sb)` Append to a string builder.
`StringValue`	`appendTo(StringBuilderValue sb)` Append to a string builder.
`StringValue`	`appendTo(UnicodeBuilderValue sb)` Append to a unicode builder.
`int`	`cmp(Value rValue)` Returns true for equality
`static NullValue`	`create()` Returns the null value singleton.
`boolean`	`eq(Value rValue)` Returns true for equality
`boolean`	`eql(Value rValue)` Returns true for equality
`void`	`generate(java.io.PrintWriter out)` Generates code to recreate the expression.
`Value`	`getArray()` Returns a new array.
`int`	`getCount(Env env)` Returns the count, as returned by the global php count() function
`Value`	`getObject(Env env)` Returns a new object.
`int`	`getSize()` Returns the array size.
`java.lang.String`	`getType()` Returns the type.
`ValueType`	`getValueType()` Returns the ValueType.
`int`	`hashCode()`
`boolean`	`isEmpty()` Returns true if the value is empty
`boolean`	`isNull()` Returns true for a null.
`boolean`	`isset()` Returns true for a set type.
`void`	`jsonEncode(Env env, JsonEncodeContext context, StringValue sb)` Encodes the value in JSON.
`void`	`print(Env env)` Prints the value.
`void`	`serialize(Env env, java.lang.StringBuilder sb)` Serializes the value.
`Value`	`sub(long rLong)` Subtracts the following value.
`Value`	`toArgRef()` Converts to a reference variable
`ArrayValue`	`toArray()` Converts to an array
`ArrayValue`	`toArrayValue(Env env)` Casts to an array.
`Value`	`toAutoArray()` Converts to an array if null.
`Value`	`toAutoObject(Env env)` Converts to an object if null.
`java.math.BigDecimal`	`toBigDecimal()` Converts to a Java BigDecimal.
`java.math.BigInteger`	`toBigInteger()` Converts to a Java BigInteger.
`boolean`	`toBoolean()` Converts to a boolean.
`int`	`toBooleanMarshalCost()` Cost to convert to a boolean
`int`	`toByteMarshalCost()` Cost to convert to a byte
`java.lang.String`	`toDebugString()`
`double`	`toDouble()` Converts to a double.
`int`	`toDoubleMarshalCost()` Cost to convert to a double
`int`	`toIntegerMarshalCost()` Cost to convert to an integer
`java.lang.Boolean`	`toJavaBoolean()` Converts to a java boolean object.
`java.lang.Byte`	`toJavaByte()` Converts to a java Byte object.
`java.util.Calendar`	`toJavaCalendar()` Converts to a Java Calendar.
`java.lang.Character`	`toJavaCharacter()` Converts to a java Character object.
`java.util.Collection`	`toJavaCollection(Env env, java.lang.Class type)` Converts to a java object.
`java.util.Date`	`toJavaDate()` Converts to a Java Date.
`java.lang.Double`	`toJavaDouble()` Converts to a java Double object.
`java.lang.Enum`	`toJavaEnum(Env env, java.lang.Class cls)` Converts to a Java Enum.
`java.lang.Float`	`toJavaFloat()` Converts to a java Float object.
`java.lang.Integer`	`toJavaInteger()` Converts to a java Integer object.
`java.util.List`	`toJavaList(Env env, java.lang.Class type)` Converts to a java object.
`java.lang.Long`	`toJavaLong()` Converts to a java Long object.
`java.util.Map`	`toJavaMap(Env env, java.lang.Class type)` Converts to a java object.
`java.lang.Object`	`toJavaObject()` Converts to an object.
`java.lang.Object`	`toJavaObject(Env env, java.lang.Class type)` Converts to a java object.
`java.lang.Object`	`toJavaObjectNotNull(Env env, java.lang.Class type)` Converts to a java object.
`java.lang.Short`	`toJavaShort()` Converts to a java Short object.
`java.lang.String`	`toJavaString()` Converts to a java String object.
`java.net.URL`	`toJavaURL(Env env)` Converts to a Java URL.
`Value`	`toKey()` Converts to a key.
`long`	`toLong()` Converts to a long.
`int`	`toLongMarshalCost()` Cost to convert to a long
`Value`	`toObject(Env env)` Converts to an object.
`int`	`toShortMarshalCost()` Cost to convert to a short
`java.lang.String`	`toString()` Converts to a string.
`StringValue`	`toStringBuilder(Env env)` Converts to a string builder
`StringValue`	`toStringValue()` Converts to a StringValue.
`java.lang.Object`	`valuesToArray(Env env, java.lang.Class elementType)` Takes the values of this array, unmarshalls them to objects of type elementType, and puts them in a java array.
`void`	`varDumpImpl(Env env, WriteStream out, int depth, java.util.IdentityHashMap<Value,java.lang.String> valueSet)`
`protected void`	`varExportImpl(StringValue sb, int level)` Exports the value.

Methods inherited from class com.caucho.quercus.env.Value
abs, add, addOne, bitAnd, bitOr, bitXor, call, call, call, call, call, call, call, callCopy, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callMethodRef, callRef, callRef, callRef, callRef, callRef, callRef, callRef, charValueAt, checkPrivate, checkProtected, clone, containsKey, copy, copy, copy, copyArrayItem, copyReturn, copySaveFunArg, copyStringBuilder, copyTree, current, div, div, end, eqValue, findFunction, findQuercusClass, geq, get, get, getArg, getArgTail, getArray, getBaseIterator, getCallableName, getCalledClass, getClassName, getCountRecursive, getDirty, getField, getFieldArg, getFieldArgRef, getFieldArray, getFieldObject, getFieldVar, getHashCode, getIterator, getKeyArray, getKeyIterator, getObject, getObjectHash, getQuercusClass, getRef, getResourceType, getStaticFieldValue, getStaticFieldVar, getThisField, getThisFieldArg, getThisFieldArgRef, getThisFieldArray, getThisFieldObject, getThisFieldVar, getValueArray, getValueIterator, getVar, gt, hasCurrent, increment, initField, initField, initField, initIncompleteField, isA, isA, isArray, isBinary, isBoolean, isCallable, isDefault, isDouble, isDoubleConvertible, isEmpty, isFieldExists, isFieldInit, isLong, isLongConvertible, isNumberConvertible, isNumeric, isObject, isResource, isset, issetField, issetThisField, isString, isUnicode, isVar, key, keyExists, length, leq, lshift, lt, mod, mul, mul, neg, next, nextIndex, pop, pos, postdecr, postincr, postincr, predecr, preincr, preincr, prev, print, printDepth, printJavaChar, printJavaString, printR, printRImpl, put, put, put, putArray, putField, putField, putField, putObject, putThisField, putThisField, putThisFieldArray, putVar, remove, reset, rshift, serialize, set, setCharValueAt, setFieldInit, setJavaObject, setStaticFieldRef, shuffle, sub_rev, sub, subOne, toBinaryValue, toBinaryValue, toBinaryValue, toBinaryValueMarshalCost, toByteArrayMarshalCost, toCallable, toChar, toCharArrayMarshalCost, toCharMarshalCost, toDouble, toDouble, toDouble, toDouble, toDoubleValue, toException, toFloatMarshalCost, toInputStream, toInt, toInternString, toJavaObjectMarshalCost, toLocalRef, toLocalThis, toLocalValue, toLocalValueReadOnly, toLocalVar, toLocalVarDeclAsRef, toLong, toLong, toLong, toLong, toLongValue, toRef, toRefValue, toString, toStringBuilder, toStringBuilder, toStringBuilder, toStringMarshalCost, toStringValue, toStringValueMarshalCost, toUnicode, toUnicodeValue, toUnicodeValue, toUnicodeValueMarshalCost, toValue, toVar, unsetArray, unsetField, unsetThisArray, unsetThisField, unsetThisPrivateField, varDump, varExport

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

- Field Detail
  - NULL
```
public static final NullValue NULL
```
- Constructor Detail
  - NullValue
```
protected NullValue()
```
- Method Detail
  - create
```
public static NullValue create()
```
    Returns the null value singleton.
  - getType
```
public java.lang.String getType()
```
    Returns the type.
    
    Overrides:
    
    getType in class Value
  - getValueType
```
public ValueType getValueType()
```
    Returns the ValueType.
    
    Overrides:
    
    getValueType in class Value
  - isset
```
public boolean isset()
```
    Returns true for a set type.
    
    Overrides:
    
    isset in class Value
  - isEmpty
```
public boolean isEmpty()
```
    Returns true if the value is empty
    
    Overrides:
    
    isEmpty in class Value
  - toDoubleMarshalCost
```
public int toDoubleMarshalCost()
```
    Cost to convert to a double
    
    Overrides:
    
    toDoubleMarshalCost in class Value
  - toLongMarshalCost
```
public int toLongMarshalCost()
```
    Cost to convert to a long
    
    Overrides:
    
    toLongMarshalCost in class Value
  - toIntegerMarshalCost
```
public int toIntegerMarshalCost()
```
    Cost to convert to an integer
    
    Overrides:
    
    toIntegerMarshalCost in class Value
  - toShortMarshalCost
```
public int toShortMarshalCost()
```
    Cost to convert to a short
    
    Overrides:
    
    toShortMarshalCost in class Value
  - toByteMarshalCost
```
public int toByteMarshalCost()
```
    Cost to convert to a byte
    
    Overrides:
    
    toByteMarshalCost in class Value
  - toBooleanMarshalCost
```
public int toBooleanMarshalCost()
```
    Cost to convert to a boolean
    
    Overrides:
    
    toBooleanMarshalCost in class Value
  - toBoolean
```
public boolean toBoolean()
```
    Converts to a boolean.
    
    Overrides:
    
    toBoolean in class Value
  - isNull
```
public boolean isNull()
```
    Returns true for a null.
    
    Overrides:
    
    isNull in class Value
  - toLong
```
public long toLong()
```
    Converts to a long.
    
    Overrides:
    
    toLong in class Value
  - toDouble
```
public double toDouble()
```
    Converts to a double.
    
    Overrides:
    
    toDouble in class Value
  - toString
```
public java.lang.String toString()
```
    Converts to a string.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Parameters:
    
    env -
  - toStringBuilder
```
public StringValue toStringBuilder(Env env)
```
    Converts to a string builder
    
    Overrides:
    
    toStringBuilder in class Value
  - toJavaObject
```
public java.lang.Object toJavaObject()
```
    Converts to an object.
    
    Overrides:
    
    toJavaObject in class Value
  - toJavaObject
```
public java.lang.Object toJavaObject(Env env,
                                     java.lang.Class type)
```
    Converts to a java object.
    
    Overrides:
    
    toJavaObject in class Value
  - toJavaObjectNotNull
```
public java.lang.Object toJavaObjectNotNull(Env env,
                                            java.lang.Class type)
```
    Converts to a java object.
    
    Overrides:
    
    toJavaObjectNotNull in class Value
  - toJavaBoolean
```
public java.lang.Boolean toJavaBoolean()
```
    Converts to a java boolean object.
    
    Overrides:
    
    toJavaBoolean in class Value
  - toJavaByte
```
public java.lang.Byte toJavaByte()
```
    Converts to a java Byte object.
    
    Overrides:
    
    toJavaByte in class Value
  - toJavaShort
```
public java.lang.Short toJavaShort()
```
    Converts to a java Short object.
    
    Overrides:
    
    toJavaShort in class Value
  - toJavaInteger
```
public java.lang.Integer toJavaInteger()
```
    Converts to a java Integer object.
    
    Overrides:
    
    toJavaInteger in class Value
  - toJavaLong
```
public java.lang.Long toJavaLong()
```
    Converts to a java Long object.
    
    Overrides:
    
    toJavaLong in class Value
  - toJavaFloat
```
public java.lang.Float toJavaFloat()
```
    Converts to a java Float object.
    
    Overrides:
    
    toJavaFloat in class Value
  - toJavaDouble
```
public java.lang.Double toJavaDouble()
```
    Converts to a java Double object.
    
    Overrides:
    
    toJavaDouble in class Value
  - toJavaCharacter
```
public java.lang.Character toJavaCharacter()
```
    Converts to a java Character object.
    
    Overrides:
    
    toJavaCharacter in class Value
  - toJavaString
```
public java.lang.String toJavaString()
```
    Converts to a java String object.
    
    Overrides:
    
    toJavaString in class Value
  - toJavaCollection
```
public java.util.Collection toJavaCollection(Env env,
                                             java.lang.Class type)
```
    Converts to a java object.
    
    Overrides:
    
    toJavaCollection in class Value
  - toJavaList
```
public java.util.List toJavaList(Env env,
                                 java.lang.Class type)
```
    Converts to a java object.
    
    Overrides:
    
    toJavaList in class Value
  - toJavaMap
```
public java.util.Map toJavaMap(Env env,
                               java.lang.Class type)
```
    Converts to a java object.
    
    Overrides:
    
    toJavaMap in class Value
  - toJavaCalendar
```
public java.util.Calendar toJavaCalendar()
```
    Converts to a Java Calendar.
    
    Overrides:
    
    toJavaCalendar in class Value
  - toJavaDate
```
public java.util.Date toJavaDate()
```
    Converts to a Java Date.
    
    Overrides:
    
    toJavaDate in class Value
  - toJavaURL
```
public java.net.URL toJavaURL(Env env)
```
    Converts to a Java URL.
    
    Overrides:
    
    toJavaURL in class Value
  - toJavaEnum
```
public java.lang.Enum toJavaEnum(Env env,
                                 java.lang.Class cls)
```
    Converts to a Java Enum.
    
    Overrides:
    
    toJavaEnum in class Value
  - toBigDecimal
```
public java.math.BigDecimal toBigDecimal()
```
    Converts to a Java BigDecimal.
    
    Overrides:
    
    toBigDecimal in class Value
  - toBigInteger
```
public java.math.BigInteger toBigInteger()
```
    Converts to a Java BigInteger.
    
    Overrides:
    
    toBigInteger in class Value
  - valuesToArray
```
public java.lang.Object valuesToArray(Env env,
                                      java.lang.Class elementType)
```
    Takes the values of this array, unmarshalls them to objects of type elementType, and puts them in a java array.
    
    Overrides:
    
    valuesToArray in class Value
  - toObject
```
public Value toObject(Env env)
```
    Converts to an object.
    
    Overrides:
    
    toObject in class Value
  - toArray
```
public ArrayValue toArray()
```
    Converts to an array
    
    Overrides:
    
    toArray in class Value
  - toAutoArray
```
public Value toAutoArray()
```
    Converts to an array if null.
    
    Overrides:
    
    toAutoArray in class Value
  - append
```
public Value append(Value index,
                    Value value)
```
    Sets the array value, returning the new array, e.g. to handle string update ($a[0] = 'A'). Creates an array automatically if necessary.
    
    Overrides:
    
    append in class Value
  - toArrayValue
```
public ArrayValue toArrayValue(Env env)
```
    Casts to an array.
    
    Overrides:
    
    toArrayValue in class Value
  - toStringValue
```
public StringValue toStringValue()
```
    Converts to a StringValue.
    
    Overrides:
    
    toStringValue in class Value
  - getCount
```
public int getCount(Env env)
```
    Description copied from class: Value
    
    Returns the count, as returned by the global php count() function
    
    Overrides:
    
    getCount in class Value
  - getSize
```
public int getSize()
```
    Returns the array size.
    
    Overrides:
    
    getSize in class Value
  - toAutoObject
```
public Value toAutoObject(Env env)
```
    Converts to an object if null.
    
    Overrides:
    
    toAutoObject in class Value
  - toArgRef
```
public Value toArgRef()
```
    Converts to a reference variable
    
    Overrides:
    
    toArgRef in class Value
  - toKey
```
public Value toKey()
```
    Converts to a key.
    
    Overrides:
    
    toKey in class Value
  - eql
```
public boolean eql(Value rValue)
```
    Returns true for equality
    
    Overrides:
    
    eql in class Value
  - add
```
public Value add(long lLong)
```
    Adds to the following value.
    
    Overrides:
    
    add in class Value
  - sub
```
public Value sub(long rLong)
```
    Subtracts the following value.
    
    Overrides:
    
    sub in class Value
  - eq
```
public boolean eq(Value rValue)
```
    Returns true for equality
    
    Overrides:
    
    eq in class Value
  - cmp
```
public int cmp(Value rValue)
```
    Returns true for equality
    
    Overrides:
    
    cmp in class Value
  - print
```
public void print(Env env)
```
    Prints the value.
    
    Overrides:
    
    print in class Value
    
    Parameters:
    
    env -
  - serialize
```
public void serialize(Env env,
                      java.lang.StringBuilder sb)
```
    Serializes the value.
    
    Overrides:
    
    serialize in class Value
  - varExportImpl
```
protected void varExportImpl(StringValue sb,
                             int level)
```
    Exports the value.
    
    Overrides:
    
    varExportImpl in class Value
  - jsonEncode
```
public void jsonEncode(Env env,
                       JsonEncodeContext context,
                       StringValue sb)
```
    Encodes the value in JSON.
    
    Overrides:
    
    jsonEncode in class Value
  - getArray
```
public Value getArray()
```
    Returns a new array.
    
    Overrides:
    
    getArray in class Value
  - appendTo
```
public StringValue appendTo(BinaryBuilderValue sb)
```
    Append to a binary builder.
    
    Overrides:
    
    appendTo in class Value
  - appendTo
```
public StringValue appendTo(UnicodeBuilderValue sb)
```
    Append to a unicode builder.
    
    Overrides:
    
    appendTo in class Value
  - appendTo
```
public StringValue appendTo(StringBuilderValue sb)
```
    Append to a string builder.
    
    Overrides:
    
    appendTo in class Value
  - appendTo
```
public StringValue appendTo(LargeStringBuilderValue sb)
```
    Append to a string builder.
    
    Overrides:
    
    appendTo in class Value
  - generate
```
public void generate(java.io.PrintWriter out)
              throws java.io.IOException
```
    Generates code to recreate the expression.
    
    Overrides:
    
    generate in class Value
    
    Parameters:
    
    out - the writer to the Java source code.
    
    Throws:
    
    java.io.IOException
  - getObject
```
public Value getObject(Env env)
```
    Returns a new object.
    
    Overrides:
    
    getObject in class Value
  - toDebugString
```
public java.lang.String toDebugString()
```
    Overrides:
    
    toDebugString in class Value
  - varDumpImpl
```
public void varDumpImpl(Env env,
                        WriteStream out,
                        int depth,
                        java.util.IdentityHashMap<Value,java.lang.String> valueSet)
                 throws java.io.IOException
```
    Overrides:
    
    varDumpImpl in class Value
    
    Throws:
    
    java.io.IOException
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Value

Class NullValue

Field Summary

Fields inherited from class com.caucho.quercus.env.Value

Constructor Summary

Method Summary

Methods inherited from class com.caucho.quercus.env.Value

Methods inherited from class java.lang.Object

Field Detail

NULL

Constructor Detail

NullValue

Method Detail

create

getType

getValueType

isset

isEmpty

toDoubleMarshalCost

toLongMarshalCost

toIntegerMarshalCost

toShortMarshalCost

toByteMarshalCost

toBooleanMarshalCost

toBoolean

isNull

toLong

toDouble

toString

toStringBuilder

toJavaObject

toJavaObject

toJavaObjectNotNull

toJavaBoolean

toJavaByte

toJavaShort

toJavaInteger

toJavaLong

toJavaFloat

toJavaDouble

toJavaCharacter

toJavaString

toJavaCollection

toJavaList

toJavaMap

toJavaCalendar

toJavaDate

toJavaURL

toJavaEnum

toBigDecimal

toBigInteger

valuesToArray

toObject

toArray

toAutoArray

append

toArrayValue

toStringValue

getCount

getSize

toAutoObject

toArgRef

toKey

eql

add

sub

eq

cmp

print

serialize

varExportImpl

jsonEncode

getArray

appendTo

appendTo

appendTo

appendTo

generate

getObject

toDebugString

varDumpImpl