public class MapAccessor extends Object implements CompilablePropertyAccessor
Map
.AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_RECORD, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21, V9
Constructor and Description |
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MapAccessor() |
Modifier and Type | Method and Description |
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boolean |
canRead(EvaluationContext context,
Object target,
String name)
Called to determine if a resolver instance is able to access a specified property
on a specified target object.
|
boolean |
canWrite(EvaluationContext context,
Object target,
String name)
Called to determine if a resolver instance is able to write to a specified
property on a specified target object.
|
void |
generateCode(String propertyName,
MethodVisitor mv,
CodeFlow cf)
Generate the bytecode the performs the access operation into the specified MethodVisitor
using context information from the codeflow where necessary.
|
Class<?> |
getPropertyType()
Return the type of the accessed property - may only be known once an access has occurred.
|
Class<?>[] |
getSpecificTargetClasses()
Return an array of classes for which this resolver should be called.
|
boolean |
isCompilable()
Return
true if this property accessor is currently suitable for compilation. |
TypedValue |
read(EvaluationContext context,
Object target,
String name)
Called to read a property from a specified target object.
|
void |
write(EvaluationContext context,
Object target,
String name,
Object newValue)
Called to write to a property on a specified target object.
|
public Class<?>[] getSpecificTargetClasses()
PropertyAccessor
Returning null
indicates this is a general resolver that
can be called in an attempt to resolve a property on any type.
getSpecificTargetClasses
in interface PropertyAccessor
null
if a general resolver)public boolean canRead(EvaluationContext context, @Nullable Object target, String name) throws AccessException
PropertyAccessor
canRead
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessedAccessException
- if there is any problem determining whether the property can be readpublic TypedValue read(EvaluationContext context, @Nullable Object target, String name) throws AccessException
PropertyAccessor
PropertyAccessor.canRead(org.springframework.expression.EvaluationContext, java.lang.Object, java.lang.String)
also returns true
.read
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessedAccessException
- if there is any problem accessing the property valuepublic boolean canWrite(EvaluationContext context, @Nullable Object target, String name) throws AccessException
PropertyAccessor
canWrite
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessedAccessException
- if there is any problem determining whether the
property can be written topublic void write(EvaluationContext context, @Nullable Object target, String name, @Nullable Object newValue) throws AccessException
PropertyAccessor
PropertyAccessor.canWrite(org.springframework.expression.EvaluationContext, java.lang.Object, java.lang.String)
also returns true
.write
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessednewValue
- the new value for the propertyAccessException
- if there is any problem writing to the property valuepublic boolean isCompilable()
CompilablePropertyAccessor
true
if this property accessor is currently suitable for compilation.isCompilable
in interface CompilablePropertyAccessor
public Class<?> getPropertyType()
CompilablePropertyAccessor
getPropertyType
in interface CompilablePropertyAccessor
public void generateCode(String propertyName, MethodVisitor mv, CodeFlow cf)
CompilablePropertyAccessor
generateCode
in interface CompilablePropertyAccessor
propertyName
- the name of the propertymv
- the Asm method visitor into which code should be generatedcf
- the current state of the expression compiler