oracle.toplink.essentials.internal.expressions

Class SubSelectExpression

java.lang.Object

oracle.toplink.essentials.expressions.Expression

oracle.toplink.essentials.internal.expressions.SubSelectExpression

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class SubSelectExpression
extends Expression

This is used to support subselects. The subselect represents a mostly independent (has own expression builder) query using a report query. Subselects can be used for, in (single column), exists (empty or non-empty), comparisons (single value).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Expression	baseExpression
protected ReportQuery	subQuery

Fields inherited from class oracle.toplink.essentials.expressions.Expression

currentAlias, lastTable, selectIfOrderedBy

Constructor Summary

Constructors

Constructor and Description
SubSelectExpression()
SubSelectExpression(ReportQuery query, Expression baseExpression)

Method Summary

Modifier and Type	Method and Description
java.lang.String	descriptionOfNodeType() INTERNAL: Used in debug printing of this node.
Expression	getBaseExpression()
ExpressionBuilder	getBuilder() Return the builder from the defining expression.
ReportQuery	getSubQuery()
void	iterateOn(ExpressionIterator iterator) INTERNAL: For iterating using an inner class
Expression	normalize(ExpressionNormalizer normalizer) INTERNAL: The subquery must be normalized with the knowledge of the outer statement for outer references and correct aliasing.
Expression	normalizeSubSelect(ExpressionNormalizer normalizer, java.util.Dictionary clonedExpressions) INTERNAL: Normalize this expression now that the parent statment has been normalized.
protected void	postCopyIn(java.util.Dictionary alreadyDone) The query must be cloned, and the sub-expression must be cloned using the same outer expression identity.
protected void	printCustomSQL(ExpressionSQLPrinter printer) Print the sub query to the printer.
void	printSQL(ExpressionSQLPrinter printer) Print the sub query to the printer.
Expression	rebuildOn(Expression newBase) Should not rebuild as has its on expression builder.
protected void	setBaseExpression(Expression baseExpression)
void	setSubQuery(ReportQuery subQuery)
void	writeDescriptionOn(java.io.BufferedWriter writer) INTERNAL: Used to print a debug form of the expression tree.
void	writeSubexpressionsTo(java.io.BufferedWriter writer, int indent) INTERNAL: Used in SQL printing.

Methods inherited from class oracle.toplink.essentials.expressions.Expression

addDate, addDate, addMonths, addMonths, aliasForTable, all, all, all, all, all, all, all, all, all, all, all, all, allOf, and, any, any, any, any, any, any, any, any, any, any, any, any, anyOf, anyOfAllowingNone, ascending, asciiValue, assignAlias, assignTableAliasesStartingAt, average, between, between, between, between, between, between, between, between, between, caseStatement, clone, cloneUsing, concat, containsAllKeyWords, containsAnyKeyWords, containsSubstring, containsSubstring, containsSubstringIgnoringCase, containsSubstringIgnoringCase, convertNodeToUseOuterJoin, convertToUseOuterJoin, copiedVersionFrom, count, create, create, createWithBaseLast, currentDate, currentDateDate, currentTime, currentTimeStamp, dateDifference, dateDifference, dateName, datePart, dateToString, decode, descending, detectExpression, difference, distinct, doesConform, doesConform, equal, equal, equal, equal, equal, equal, equal, equal, equal, equal, equalOuterJoin, equalOuterJoin, equalsIgnoreCase, equalsIgnoreCase, exists, existsNode, extract, extractPrimaryKeyValues, extractValue, from, fromConstant, fromLiteral, get, get, getAllowingNull, getAllowingNull, getClonedField, getField, getField, getFields, getFieldValue, getFunction, getFunction, getFunction, getFunction, getFunctionWithArguments, getName, getNumberVal, getOperator, getOperator, getOwnedTables, getParameter, getParameter, getParameter, getSession, getStringVal, getTable, getTable, getTableAliases, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, hasAsOfClause, hasBeenAliased, hexToRaw, ifNull, in, in, in, in, in, in, in, in, in, in, in, in, indexOf, isCompoundExpression, isConstantExpression, isDataExpression, isEmpty, isExpressionBuilder, isFieldExpression, isFragment, isFunctionExpression, isLiteralExpression, isLogicalExpression, isNull, isObjectExpression, isParameterExpression, isQueryKeyExpression, isRelationExpression, isTableExpression, isValueExpression, lastDay, leftPad, leftPad, leftTrim, leftTrim, length, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, lessThanEqual, like, like, like, like, likeIgnoreCase, likeIgnoreCase, literal, locate, locate, locate, maximum, minimum, monthsBetween, newTime, nextDay, noneOf, not, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notEmpty, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notExists, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notLike, notLike, notNull, or, performOperator, postfixSQL, prefixSQL, printJava, printSQLWithoutConversion, ref, registerIn, replace, replicate, replicate, resetCache, reverse, right, right, rightPad, rightPad, rightTrim, rightTrim, roundDate, selectIfOrderedBy, setLocalBase, setSelectIfOrderedBy, shallowClone, size, some, some, some, some, some, some, some, some, some, some, some, some, standardDeviation, subQuery, substring, substring, sum, toChar, toChar, toCharacter, toDate, toLowerCase, toNumber, toString, toString, toUpperCase, toUppercaseCasedWords, translate, trim, trim, truncateDate, twist, twistedForBaseAndContext, validateNode, value, value, value, value, value, value, value, value, value, value, valueFromObject, valueFromObject, variance, writeField, writeFields

Methods inherited from class java.lang.Object

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

Field Detail

baseExpression

protected Expression baseExpression

subQuery

protected ReportQuery subQuery

Constructor Detail

SubSelectExpression

public SubSelectExpression()

SubSelectExpression

public SubSelectExpression(ReportQuery query,
                           Expression baseExpression)

Method Detail

descriptionOfNodeType

public java.lang.String descriptionOfNodeType()

INTERNAL: Used in debug printing of this node.

Overrides:

descriptionOfNodeType in class Expression

getBaseExpression

public Expression getBaseExpression()

getBuilder

public ExpressionBuilder getBuilder()

Return the builder from the defining expression.

Specified by:

getBuilder in class Expression

getSubQuery

public ReportQuery getSubQuery()

iterateOn

public void iterateOn(ExpressionIterator iterator)

INTERNAL: For iterating using an inner class

Overrides:

iterateOn in class Expression

normalize

public Expression normalize(ExpressionNormalizer normalizer)

INTERNAL: The subquery must be normalized with the knowledge of the outer statement for outer references and correct aliasing. For CR#4223 it will now be normalized after the outer statement is, rather than somewhere in the middle of the outer statement's normalize.

Overrides:

normalize in class Expression

normalizeSubSelect

public Expression normalizeSubSelect(ExpressionNormalizer normalizer,
                                     java.util.Dictionary clonedExpressions)

INTERNAL: Normalize this expression now that the parent statment has been normalized. For CR#4223

postCopyIn

protected void postCopyIn(java.util.Dictionary alreadyDone)

The query must be cloned, and the sub-expression must be cloned using the same outer expression identity.

Overrides:

postCopyIn in class Expression

printCustomSQL

protected void printCustomSQL(ExpressionSQLPrinter printer)

Print the sub query to the printer.

printSQL

public void printSQL(ExpressionSQLPrinter printer)

Print the sub query to the printer.

Specified by:

printSQL in class Expression

rebuildOn

public Expression rebuildOn(Expression newBase)

Should not rebuild as has its on expression builder.

Specified by:

rebuildOn in class Expression

See Also:

Expression.cloneUsing(Expression newBase)

setBaseExpression

protected void setBaseExpression(Expression baseExpression)

setSubQuery

public void setSubQuery(ReportQuery subQuery)

writeDescriptionOn

public void writeDescriptionOn(java.io.BufferedWriter writer)
                        throws java.io.IOException

INTERNAL: Used to print a debug form of the expression tree.

Overrides:

writeDescriptionOn in class Expression

Throws:

java.io.IOException

writeSubexpressionsTo

public void writeSubexpressionsTo(java.io.BufferedWriter writer,
                                  int indent)
                           throws java.io.IOException

INTERNAL: Used in SQL printing.

Overrides:

writeSubexpressionsTo in class Expression

Throws:

java.io.IOException