类 CompoundExpression
- java.lang.Object
- org.springframework.expression.spel.ast.SpelNodeImpl
- org.springframework.expression.spel.ast.CompoundExpression
public class CompoundExpression extends SpelNodeImpl
Represents a DOT separated expression sequence, such as'property1.property2.methodOne()'.- 从以下版本开始:
- 3.0
- 作者:
- Andy Clement
字段概要
从类继承的字段 org.springframework.expression.spel.ast.SpelNodeImpl
children, exitTypeDescriptor
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, ASM7, ASM8_EXPERIMENTAL, 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, V9
构造器概要
构造器 构造器 说明 CompoundExpression(int startPos, int endPos, SpelNodeImpl... expressionComponents)
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 voidgenerateCode(MethodVisitor mv, CodeFlow cf)Generate the bytecode for this node into the supplied visitor.TypedValuegetValueInternal(ExpressionState state)Evaluates a compound expression.protected ValueRefgetValueRef(ExpressionState state)booleanisCompilable()Check whether a node can be compiled to bytecode.booleanisWritable(ExpressionState state)Determine if this expression node will support a setValue() call.voidsetValue(ExpressionState state, Object value)Evaluate the expression to a node and then set the new value on that node.StringtoStringAST()Return the string form the this AST node.从类继承的方法 org.springframework.expression.spel.ast.SpelNodeImpl
generateCodeForArgument, generateCodeForArguments, getChild, getChildCount, getEndPosition, getExitDescriptor, getObjectClass, getStartPosition, getTypedValue, getValue, getValue, nextChildIs
构造器详细资料
CompoundExpression
public CompoundExpression(int startPos, int endPos, SpelNodeImpl... expressionComponents)
方法详细资料
getValueRef
protected ValueRef getValueRef(ExpressionState state) throws EvaluationException
- 覆盖:
getValueRef在类中SpelNodeImpl- 抛出:
EvaluationException
getValueInternal
public TypedValue getValueInternal(ExpressionState state) throws EvaluationException
Evaluates a compound expression. This involves evaluating each piece in turn and the return value from each piece is the active context object for the subsequent piece.- 指定者:
getValueInternal在类中SpelNodeImpl- 参数:
state- the state in which the expression is being evaluated- 返回:
- the final value from the last piece of the compound expression
- 抛出:
EvaluationException
setValue
public void setValue(ExpressionState state, @Nullable Object value) throws EvaluationException
从接口复制的说明:SpelNodeEvaluate 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)value- 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:SpelNodeDetermine 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()
从接口复制的说明:SpelNodeReturn the string form the this AST node.- 返回:
- the string form
isCompilable
public boolean isCompilable()
从类复制的说明:SpelNodeImplCheck 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:
trueif this node can be compiled to bytecode
generateCode
public void generateCode(MethodVisitor mv, CodeFlow cf)
从类复制的说明:SpelNodeImplGenerate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object, e.g. including 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