类 PropertyOrFieldReference
- java.lang.Object
- org.springframework.expression.spel.ast.SpelNodeImpl
- org.springframework.expression.spel.ast.PropertyOrFieldReference
public class PropertyOrFieldReference extends SpelNodeImpl
Represents a simple property or field reference.- 从以下版本开始:
- 3.0
- 作者:
- Andy Clement, Juergen Hoeller, Clark Duplichien
字段概要
从类继承的字段 org.springframework.expression.spel.ast.SpelNodeImpl
children, exitTypeDescriptor, pos
从接口继承的字段 org.springframework.asm.Opcodes
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_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, ASM4, ASM5, ASM6, 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, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V1_9
构造器概要
构造器 构造器 说明 PropertyOrFieldReference(boolean nullSafe, String propertyOrFieldName, int pos)
方法概要
所有方法 实例方法 具体方法 修饰符和类型 方法 说明 void
generateCode(MethodVisitor mv, CodeFlow cf)
Generate the bytecode for this node into the supplied visitor.String
getName()
TypedValue
getValueInternal(ExpressionState state)
ValueRef
getValueRef(ExpressionState state)
boolean
isCompilable()
Check whether a node can be compiled to bytecode.boolean
isNullSafe()
boolean
isWritable(ExpressionState state)
Determine if this expression node will support a setValue() call.boolean
isWritableProperty(String name, TypedValue contextObject, EvaluationContext evalContext)
void
setValue(ExpressionState state, Object newValue)
Evaluate the expression to a node and then set the new value on that node.String
toStringAST()
从类继承的方法 org.springframework.expression.spel.ast.SpelNodeImpl
generateCodeForArgument, generateCodeForArguments, getChild, getChildCount, getEndPosition, getExitDescriptor, getObjectClass, getPreviousChild, getStartPosition, getTypedValue, getValue, getValue, nextChildIs
构造器详细资料
PropertyOrFieldReference
public PropertyOrFieldReference(boolean nullSafe, String propertyOrFieldName, int pos)
方法详细资料
isNullSafe
public boolean isNullSafe()
getValueRef
public ValueRef getValueRef(ExpressionState state) throws EvaluationException
- 覆盖:
getValueRef
在类中SpelNodeImpl
- 抛出:
EvaluationException
getValueInternal
public TypedValue getValueInternal(ExpressionState state) throws EvaluationException
- 指定者:
getValueInternal
在类中SpelNodeImpl
- 抛出:
EvaluationException
setValue
public void setValue(ExpressionState state, Object newValue) throws EvaluationException
从接口复制的说明:SpelNode
Evaluate the expression to a node and then set the new value on that node. For example, if the expression evaluates to a property reference, then the property will be set to the new value.- 指定者:
setValue
在接口中SpelNode
- 覆盖:
setValue
在类中SpelNodeImpl
- 参数:
state
- the current expression state (includes the context)newValue
- the new value- 抛出:
EvaluationException
- if any problem occurs evaluating the expression or setting the new value
isWritable
public boolean isWritable(ExpressionState state) throws EvaluationException
从接口复制的说明:SpelNode
Determine if this expression node will support a setValue() call.- 指定者:
isWritable
在接口中SpelNode
- 覆盖:
isWritable
在类中SpelNodeImpl
- 参数:
state
- the current expression state (includes the context)- 返回:
- true if the expression node will allow setValue()
- 抛出:
EvaluationException
- if something went wrong trying to determine if the node supports writing
toStringAST
public String toStringAST()
- 返回:
- the string form of this AST node
isWritableProperty
public boolean isWritableProperty(String name, TypedValue contextObject, EvaluationContext evalContext) throws EvaluationException
isCompilable
public boolean isCompilable()
从类复制的说明:SpelNodeImpl
Check whether a node can be compiled to bytecode. The reasoning in each node may be different but will typically involve checking whether the exit type descriptor of the node is known and any relevant child nodes are compilable.- 覆盖:
isCompilable
在类中SpelNodeImpl
- 返回:
true
if this node can be compiled to bytecode
generateCode
public void generateCode(MethodVisitor mv, CodeFlow cf)
从类复制的说明:SpelNodeImpl
Generate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object. For example it will include information about the type of the object currently on the stack.- 覆盖:
generateCode
在类中SpelNodeImpl
- 参数:
mv
- the ASM MethodVisitor into which code should be generatedcf
- a context object with info about what is on the stack