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oracle.javatools.parser.plsql.old.symbol
Class ExpressionSymbol

java.lang.Object
oracle.javatools.parser.util.ArrayListHeap
oracle.javatools.parser.plsql.old.symbol.PlsqlSymbol
oracle.javatools.parser.plsql.old.symbol.ExpressionSymbol

All Implemented Interfaces:

PlsqlSyntaxCodes, PlsqlTokens, Nameable

Direct Known Subclasses:

ExpressionList, ExpressionWrapper

public class ExpressionSymbol

extends PlsqlSymbol

implements Nameable

Field Summary

static int	CATEGORY_ARGUMENTS This is an arguments list.
static int	CATEGORY_INFIX_OPERATOR This is an infix operator.
static int	CATEGORY_PAREN_WRAPPER This is a paren expression.
static int	CATEGORY_POSTFIX_OPERATOR This is a postfix operator.
static int	CATEGORY_PREFIX_OPERATOR This is a prefix operator.
static int	CATEGORY_PRIMARY This is a primary.
static int	CATEGORY_SPECIAL_OPERATOR This is an operator that is neither a prefix nor an infix operator.
static int	CATEGORY_SQL This is a sql expression.
static int	CATEGORY_UNKNOWN We don't know what this expression is.
static int	CATEGORY_WRAPPER This is an expression wrapper and has one operand which is the actual expression tree.
protected ExpressionSymbol	firstOperand
protected ExpressionSymbol	secondOperand
protected ExpressionSymbol	thirdOperand

Fields inherited from class oracle.javatools.parser.plsql.old.symbol.PlsqlSymbol

SYNTAX_EOF, SYNTAX_ERROR, SYNTAX_ROOT

Fields inherited from interface oracle.javatools.parser.plsql.old.PlsqlSyntaxCodes

SYNTAX_ARGUMENTS, SYNTAX_BLOCK, SYNTAX_BLOCK_STATEMENT, SYNTAX_CURSOR_DECL, SYNTAX_DATATYPE, SYNTAX_ELSE_CLAUSE, SYNTAX_ELSIF_CLAUSE, SYNTAX_EXCEPTION_HANDLER, SYNTAX_EXP_INNER, SYNTAX_EXP_MIDDLE, SYNTAX_EXP_OUTER, SYNTAX_EXP_STATEMENT, SYNTAX_EXPRESSION, SYNTAX_FOR_LOOP, SYNTAX_FUNCTION, SYNTAX_IF_STATEMENT, SYNTAX_INFIX_OPERATOR, SYNTAX_INSERT_EXPRESSION, SYNTAX_ITEM_DECL, SYNTAX_LABEL, SYNTAX_LITERAL, SYNTAX_LOOP, SYNTAX_LOOP_STATEMENT, SYNTAX_OBJECT_TYPE, SYNTAX_PACKAGE, SYNTAX_PARAMETER, SYNTAX_PARAMETER_LIST, SYNTAX_PAREN_EXPRESSION, SYNTAX_PLSQL_ROOT, SYNTAX_POSTFIX_OPERATOR, SYNTAX_PREFIX_OPERATOR, SYNTAX_PRIMARY, SYNTAX_PRIMARY_NAME, SYNTAX_PROCEDURE, SYNTAX_SCHEMA_NAME, SYNTAX_SELECT_EXPRESSION, SYNTAX_SIMPLE_NAME, SYNTAX_SPECIAL_OPERATOR, SYNTAX_SQL_EXPRESSION, SYNTAX_STATEMENT, SYNTAX_TYPE_CURSOR_DECL, SYNTAX_TYPE_DECL, SYNTAX_TYPE_RECORD_DECL, SYNTAX_TYPE_TABLE_DECL, SYNTAX_TYPE_VARRAY_DECL, SYNTAX_UNPARSED_EXPRESSION, SYNTAX_UNPARSED_LOOP, SYNTAX_UNPARSED_STMT, SYNTAX_VARIABLE_DECL, SYNTAX_WHILE_LOOP

Fields inherited from interface oracle.javatools.parser.plsql.old.PlsqlTokens

TK_ASG, TK_ASSOC, TK_AT, TK_ATTRIBUTE, TK_BOOLEAN_LITERAL, TK_CHAR_LITERAL, TK_COLON, TK_COMMA, TK_CONCAT, TK_DIV, TK_DOT, TK_EQ, TK_EXPONENT, TK_FLOAT_LITERAL, TK_GE, TK_GT, TK_IDENTIFIER, TK_INT_LITERAL, TK_INVALID, TK_LE, TK_LLABEL, TK_LPAREN, TK_LT, TK_MINUS, TK_MUL, TK_MULTI_COMMENT, TK_NE, TK_NULL_LITERAL, TK_OUTERJOIN, TK_PLUS, TK_QUOTED_IDENTIFIER, TK_RANGE, TK_RLABEL, TK_RPAREN, TK_SEMI, TK_SINGLE_COMMENT, TKKW_ALL, TKKW_ALTER, TKKW_AND, TKKW_ANY, TKKW_ARRAY, TKKW_AS, TKKW_ASC, TKKW_AT, TKKW_AUTHID, TKKW_AVG, TKKW_BEGIN, TKKW_BETWEEN, TKKW_BFILE, TKKW_BINARY_INTEGER, TKKW_BLOB, TKKW_BODY, TKKW_BOOLEAN, TKKW_BULK, TKKW_BY, TKKW_CASE, TKKW_CHAR, TKKW_CHAR_BASE, TKKW_CHECK, TKKW_CLOB, TKKW_CLOSE, TKKW_CLUSTER, TKKW_COALESCE, TKKW_COLLECT, TKKW_COMMENT, TKKW_COMMIT, TKKW_COMPRESS, TKKW_CONNECT, TKKW_CONSTANT, TKKW_CREATE, TKKW_CURRENT, TKKW_CURRVAL, TKKW_CURSOR, TKKW_DATE, TKKW_DAY, TKKW_DEC, TKKW_DECIMAL, TKKW_DECLARE, TKKW_DEFAULT, TKKW_DELETE, TKKW_DESC, TKKW_DISTINCT, TKKW_DO, TKKW_DROP, TKKW_ELSE, TKKW_ELSIF, TKKW_END, TKKW_EXCEPTION, TKKW_EXCLUSIVE, TKKW_EXECUTE, TKKW_EXISTS, TKKW_EXIT, TKKW_EXTENDS, TKKW_EXTRACT, TKKW_FALSE, TKKW_FETCH, TKKW_FLOAT, TKKW_FOR, TKKW_FORALL, TKKW_FROM, TKKW_FUNCTION, TKKW_GOTO, TKKW_GROUP, TKKW_HAVING, TKKW_HEAP, TKKW_HOUR, TKKW_IF, TKKW_IMMEDIATE, TKKW_IN, TKKW_INDEX, TKKW_INDICATOR, TKKW_INSERT, TKKW_INTEGER, TKKW_INTERFACE, TKKW_INTERSECT, TKKW_INTERVAL, TKKW_INTO, TKKW_IS, TKKW_ISOLATION, TKKW_JAVA, TKKW_LEVEL, TKKW_LIKE, TKKW_LIMITED, TKKW_LOCK, TKKW_LONG, TKKW_LOOP, TKKW_MAX, TKKW_MIN, TKKW_MINUS, TKKW_MINUTE, TKKW_MLSLABEL, TKKW_MOD, TKKW_MODE, TKKW_MONTH, TKKW_NATURAL, TKKW_NATURALN, TKKW_NCHAR, TKKW_NCLOB, TKKW_NEW, TKKW_NEXTVAL, TKKW_NOCOPY, TKKW_NOT, TKKW_NOWAIT, TKKW_NULL, TKKW_NULLIF, TKKW_NUMBER, TKKW_NUMBER_BASE, TKKW_NUMERIC, TKKW_NVARCHAR2, TKKW_OCIROWID, TKKW_OF, TKKW_ON, TKKW_OPAQUE, TKKW_OPEN, TKKW_OPERATOR, TKKW_OPTION, TKKW_OR, TKKW_ORDER, TKKW_ORGANIZATION, TKKW_OTHERS, TKKW_OUT, TKKW_PACKAGE, TKKW_PARTITION, TKKW_PCTFREE, TKKW_PLS_INTEGER, TKKW_POSITIVE, TKKW_POSITIVEN, TKKW_PRAGMA, TKKW_PRIOR, TKKW_PRIVATE, TKKW_PROCEDURE, TKKW_PUBLIC, TKKW_RAISE, TKKW_RANGE, TKKW_RAW, TKKW_REAL, TKKW_RECORD, TKKW_REF, TKKW_RELEASE, TKKW_RETURN, TKKW_REVERSE, TKKW_ROLLBACK, TKKW_ROW, TKKW_ROWID, TKKW_ROWNUM, TKKW_ROWTYPE, TKKW_SAVEPOINT, TKKW_SECOND, TKKW_SELECT, TKKW_SEPARATE, TKKW_SET, TKKW_SHARE, TKKW_SMALLINT, TKKW_SPACE, TKKW_SQL, TKKW_SQLCODE, TKKW_SQLERRM, TKKW_START, TKKW_STDDEV, TKKW_SUBTYPE, TKKW_SUCCESSFUL, TKKW_SUM, TKKW_SYNONYM, TKKW_SYSDATE, TKKW_TABLE, TKKW_THEN, TKKW_TIME, TKKW_TIMESTAMP, TKKW_TIMEZONE_ABBR, TKKW_TIMEZONE_HOUR, TKKW_TIMEZONE_MINUTE, TKKW_TIMEZONE_REGION, TKKW_TO, TKKW_TRIGGER, TKKW_TRUE, TKKW_TYPE, TKKW_UID, TKKW_UNION, TKKW_UNIQUE, TKKW_UPDATE, TKKW_USE, TKKW_USER, TKKW_VALIDATE, TKKW_VALUES, TKKW_VARCHAR, TKKW_VARCHAR2, TKKW_VARIANCE, TKKW_VIEW, TKKW_WHEN, TKKW_WHENEVER, TKKW_WHERE, TKKW_WHILE, TKKW_WITH, TKKW_WORK, TKKW_WRITE, TKKW_YEAR, TKKW_ZONE

Method Summary

int	getCategory()
int	getExactCode()
ExpressionSymbol	getFirstOperand()
NameSymbol	getName() Gets the name symbol.
ExpressionSymbol	getSecondOperand()
ExpressionSymbol	getThirdOperand()
void	setName(NameSymbol name) Sets the name symbol.

Methods inherited from class oracle.javatools.parser.plsql.old.symbol.PlsqlSymbol

getChildren, getCode, getDataValue, getEndOffset, getParent, getStartOffset, isLeafNode, isRootNode

Methods inherited from class oracle.javatools.parser.util.ArrayListHeap

allocArrayList, freeArrayList

Methods inherited from class java.lang.Object

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

Field Detail

CATEGORY_WRAPPER

public static final int CATEGORY_WRAPPER

This is an expression wrapper and has one operand which is the actual expression tree. This wrapper provides the start and end offsets for the entire expression. You should see this only as the root of an INPUT_EXPRESSION parse.

See Also:

Constant Field Values

CATEGORY_UNKNOWN

public static final int CATEGORY_UNKNOWN

We don't know what this expression is. Either there was a syntax error or this expression syntax simply hasn't been implemented yet.

See Also:

Constant Field Values

CATEGORY_PAREN_WRAPPER

public static final int CATEGORY_PAREN_WRAPPER

This is a paren expression. The first operand is the actual expression. The reason we have this at all is so that we can preserve the offsets of the parentheses.

See Also:

Constant Field Values

CATEGORY_SQL

public static final int CATEGORY_SQL

This is a sql expression. Right now, you can't retrieve the details of the sql expression. All you can do is getName() to retrieve the NameSymbol representing the string for the entire sql expression.

See Also:

Constant Field Values

CATEGORY_PREFIX_OPERATOR

public static final int CATEGORY_PREFIX_OPERATOR

This is a prefix operator. Call getExactCode() to find out exactly which operator this is. Please refer to PlsqlSyntaxRecognizer.isPrefixOperator().

See Also:

Constant Field Values

CATEGORY_POSTFIX_OPERATOR

public static final int CATEGORY_POSTFIX_OPERATOR

This is a postfix operator. Call getExactCode() to find out exactly which operator this is. Please refer to PlsqlSyntaxRecognizer.isPostfixOperator().

See Also:

Constant Field Values

CATEGORY_INFIX_OPERATOR

public static final int CATEGORY_INFIX_OPERATOR

This is an infix operator. Call getExactCode() to find out exactly which operator this is. For example, if ( getExactCode() == TK_PLUS ) then this is an addition operation. For all infix operators, there will be a firstOperand and secondOperand. Please refer to PlsqlSyntaxRecognizer.isInfixOperator().

See Also:

Constant Field Values

CATEGORY_SPECIAL_OPERATOR

public static final int CATEGORY_SPECIAL_OPERATOR

This is an operator that is neither a prefix nor an infix operator. Call getExactCode() to find out exactly which operator this is. The codes are: (don't neglect the negated cases!) TK_IS firstOp IS NULL - TK_IS firstOp IS NOT NULL TK_BETWEEN firstOp BETWEEN secondOp AND thirdOp - TK_BETWEEN firstOp NOT BETWEEN secondOp AND thirdOp TK_LIKE firstOp LIKE secondOp - TK_LIKE firstOp NOT LIKE secondOp TK_IN firstOp IN secondOp - TK_IN firstOp NOT IN secondOp Note: With the TK_IN operation (and negated operation), the secondOp should be of type CATEGORY_ARGUMENTS.

See Also:

Constant Field Values

CATEGORY_PRIMARY

public static final int CATEGORY_PRIMARY

This is a primary. This object is actually an instance of an ExpressionList. If we have the primary "a.b(i)(j)(k).FIRST", then this ExpressionList will have four operands and the name "a.b". The first three operands will all be CATEGORY_ARGUMENTS expressions, one each for i, j, and k. The fourth operand will be a CATEGORY_PRIMARY expression with name "FIRST".

Examples of primaries are: 1, 'Hello world!', a.b, countkids%FOUND.

There is one special case to this category. The expression "EXISTS( SELECT ... )" is a CATEGORY_PRIMARY expression with name "EXISTS" and with a first operand of type CATEGORY_SQL.

See Also:

Constant Field Values

CATEGORY_ARGUMENTS

public static final int CATEGORY_ARGUMENTS

This is an arguments list. This object is actually an instance of an ExpressionList. Each argument is an operand in the expression list, in the correct order.

See Also:

Constant Field Values

firstOperand

protected ExpressionSymbol firstOperand

secondOperand

protected ExpressionSymbol secondOperand

thirdOperand

protected ExpressionSymbol thirdOperand

Method Detail

getCategory

public int getCategory()

Returns:

the category of this expression. See enumerated constants below. Each constant describes which fields are non-null.

getExactCode

public int getExactCode()

Returns:

the exact token value of this expression symbol as listed in JavaTokens. Used to gather more specific information beyond the category.

getFirstOperand

public ExpressionSymbol getFirstOperand()

Returns:

the ExpressionSymbol representing the first operand. Non-null if this expression is an operator (and hence has operands).

getSecondOperand

public ExpressionSymbol getSecondOperand()

Returns:

the ExpressionSymbol representing the second operand. Non-null if this operator has a second operand.

getThirdOperand

public ExpressionSymbol getThirdOperand()

Returns:

the ExpressionSymbol representing the third operand. Non-null if this is the conditional operator.

getName

public NameSymbol getName()

Description copied from interface: Nameable

Gets the name symbol.

Specified by:

getName in interface Nameable

Returns:

The NameSymbol associated with this object. Null if none.

setName

public void setName(NameSymbol name)

Description copied from interface: Nameable

Sets the name symbol.

Specified by:

setName in interface Nameable

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