Module org.eclipse.persistence.core

Package org.eclipse.persistence.internal.expressions

Class MapEntryExpression

java.lang.Object

org.eclipse.persistence.expressions.Expression

org.eclipse.persistence.internal.expressions.BaseExpression

org.eclipse.persistence.internal.expressions.DataExpression

org.eclipse.persistence.internal.expressions.ObjectExpression

org.eclipse.persistence.internal.expressions.QueryKeyExpression

org.eclipse.persistence.internal.expressions.MapEntryExpression

All Implemented Interfaces:

Serializable, Cloneable

public class MapEntryExpression
extends QueryKeyExpression

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	returnMapEntry

Fields inherited from class org.eclipse.persistence.internal.expressions.QueryKeyExpression

aliasedField, hasMapping, hasQueryKey, index, isAttributeExpression, isClonedForSubQuery, mapping, name, queryKey, shouldQueryToManyRelationship

Fields inherited from class org.eclipse.persistence.internal.expressions.ObjectExpression

castClass, derivedExpressions, descriptor, hasBeenAliased, joinSource, onClause, shouldUseOuterJoin, shouldUseOuterJoinForMultitableInheritance

Fields inherited from class org.eclipse.persistence.internal.expressions.DataExpression

asOfClause, derivedFields, derivedTables, hasBeenNormalized, tableAliases

Fields inherited from class org.eclipse.persistence.internal.expressions.BaseExpression

baseExpression, builder

Fields inherited from class org.eclipse.persistence.expressions.Expression

currentAlias, hashCode, lastTable, selectIfOrderedBy, shouldUseUpperCaseForIgnoreCase

Constructor Summary

Constructors

Constructor	Description
MapEntryExpression()
MapEntryExpression(Expression base)

Method Summary

Modifier and Type	Method	Description
DatabaseTable	aliasForTable(DatabaseTable table)	INTERNAL: Find the alias for a given table.
String	descriptionOfNodeType()	INTERNAL: Used for debug printing.
Expression	existingDerivedTable(DatabaseTable table)	INTERNAL:
ClassDescriptor	getDescriptor()
DatabaseField	getField()	INTERNAL:
Vector	getFields()	INTERNAL: Return all the fields
CollectionMapping	getMapping()
List<DatabaseTable>	getOwnedTables()	Exclude any tables defined by base.
QueryKey	getQueryKeyOrNull()
List<DatabaseField>	getSelectionFields(ReadQuery query)	INTERNAL:
boolean	isAttribute()	INTERNAL: Return if the expression is for a direct mapped attribute.
boolean	isMapEntryExpression()	INTERNAL:
Expression	mappingCriteria(Expression base)	INTERNAL: Mapping criteria will be provided by the base expression
Expression	rebuildOn(Expression newBase)	INTERNAL: This expression is built on a different base than the one we want.
Expression	rebuildOn(Expression oldBase, Expression newBase)	INTERNAL: A special version of rebuildOn where the newBase need not be a new ExpressionBuilder but any expression.
void	returnMapEntry()	Set this expression to represent a Map.Entry rather than the Map's key
boolean	shouldReturnMapEntry()
void	validateNode()	Do any required validation for this node.
void	writeDescriptionOn(BufferedWriter writer)	INTERNAL: Used to print a debug form of the expression tree.

Methods inherited from class org.eclipse.persistence.internal.expressions.QueryKeyExpression

additionalExpressionCriteria, additionalExpressionCriteriaMap, checkJoinForSubSelectWithParent, computeHashCode, doQueryToManyRelationship, equals, getAdditionalTables, getAliasedField, getAliasedTable, getFieldValue, getLeafDescriptor, getLeafMapping, getMapKeyDescriptor, getMappingFromQueryKey, getName, getNestedAttributeName, getReferenceTable, getRelationTable, getSourceTable, index, initializeAliasedField, isDirectCollection, isManyToMany, isMapKeyObjectRelationship, isOneToMany, isOneToOne, isQueryKeyExpression, normalize, normalize, postCopyIn, printJava, printSQL, resetCache, shouldQueryToManyRelationship, treat, twistedForBaseAndContext, valueFromObject, valuesFromCollection

Methods inherited from class org.eclipse.persistence.internal.expressions.ObjectExpression

addDerivedExpression, anyOf, anyOfAllowingNone, assignTableAliasesStartingAt, clearAliases, convertToCastDescriptor, copyDerivedExpressions, derivedExpressionNamed, derivedManualExpressionNamed, doNotUseOuterJoin, doUseOuterJoin, existingDerivedExpressionNamed, get, getAllowingNull, getCastClass, getFirstNonAggregateExpressionAfterExpressionBuilder, getForUpdateOfFields, getJoinSource, getManualQueryKey, getOnClause, getOuterJoinExpIndex, hasBeenAliased, hasDerivedExpressions, isDowncast, isObjectExpression, isTreatUsed, isUsingOuterJoinForMultitableInheritance, join, leftJoin, newDerivedExpressionNamed, newManualDerivedExpressionNamed, postCopyIn, setCastClass, setJoinSource, setOnClause, setOuterJoinExpIndex, setShouldUseOuterJoinForMultitableInheritance, shouldUseOuterJoin, shouldUseOuterJoinForMultitableInheritance, type, writeForUpdateOfFields

Methods inherited from class org.eclipse.persistence.internal.expressions.DataExpression

addDerivedField, addDerivedTable, asOf, assignAlias, assignAlias, copyCollection, existingDerivedField, getAlias, getAsOfClause, getContainingDescriptor, getField, getField, getTable, getTable, getTableAliases, hasAsOfClause, hasBeenNormalized, hasDerivedFields, hasDerivedTables, isDataExpression, iterateOn, newDerivedField, newDerivedTable, setHasBeenNormalized, setTableAliases, tableAliasesDescription, writeSubexpressionsTo

Methods inherited from class org.eclipse.persistence.internal.expressions.BaseExpression

getBaseExpression, getBuilder, resetPlaceHolderBuilder, setBaseExpression, shallowClone

Methods inherited from class org.eclipse.persistence.expressions.Expression

addDate, addDate, addMonths, addMonths, alias, 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, as, ascending, asciiValue, average, between, between, between, between, between, between, between, between, between, caseConditionStatement, caseConditionStatement, caseStatement, caseStatement, cast, clone, cloneUsing, coalesce, coalesce, 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, difference, distinct, doesConform, doesConform, equal, equal, equal, equal, equal, equal, equal, equal, equal, equal, equalOuterJoin, equalOuterJoin, equalsIgnoreCase, equalsIgnoreCase, except, except, exceptAll, exceptAll, exists, existsNode, extract, extractFields, extractPrimaryKeyValues, extractValue, extractValues, extractXml, from, fromConstant, fromLiteral, get, getAsOfClauseRecursively, getClonedField, getFunction, getFunction, getFunction, getFunction, getFunctionWithArguments, getNumberVal, getOperator, getOperator, getParameter, getParameter, getParameter, getProperty, getSelectionFields, getSession, getStringVal, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, greaterThanEqual, hashCode, hexToRaw, ifNull, in, in, in, in, in, in, in, in, in, in, in, in, indexOf, intersect, intersect, intersectAll, intersectAll, isClassTypeExpression, isCompoundExpression, isConstantExpression, isEmpty, isExpressionBuilder, isFieldExpression, isFragment, isFunctionExpression, isLiteralExpression, isLogicalExpression, isNull, isParameterExpression, isRelationExpression, isSubSelectExpression, isTableExpression, isTreatExpression, 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, localDate, localDateTime, localTime, locate, locate, locate, mapEntry, mapKey, 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, notLike, notLike, notNull, nullIf, nullsFirst, nullsLast, operator, or, performOperator, postfixSQL, prefixSQL, ref, regexp, regexp, registerIn, replace, replicate, replicate, reverse, right, right, rightPad, rightPad, rightTrim, rightTrim, roundDate, selectIfOrderedBy, setLocalBase, setSelectIfOrderedBy, size, size, some, some, some, some, some, some, some, some, some, some, some, some, sql, standardDeviation, subQuery, substring, substring, substring, substring, sum, toChar, toChar, toCharacter, toDate, toLowerCase, toNumber, toString, toString, toUpperCase, toUppercaseCasedWords, translate, trim, trim, truncateDate, twist, union, union, unionAll, unionAll, value, value, value, value, value, value, value, value, value, value, valueFromObject, variance, writeAlias, writeField, writeFields

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

returnMapEntry

protected boolean returnMapEntry

Constructor Details

MapEntryExpression

public MapEntryExpression(Expression base)

MapEntryExpression

public MapEntryExpression()

Method Details

aliasForTable

public DatabaseTable aliasForTable(DatabaseTable table)

INTERNAL: Find the alias for a given table. A TableEntry is a place holder and its base expression holds all the relevant information. Get the alias from the baseExpression

Overrides:

aliasForTable in class QueryKeyExpression

returnMapEntry

public void returnMapEntry()

Set this expression to represent a Map.Entry rather than the Map's key

rebuildOn

public Expression rebuildOn(Expression newBase)

INTERNAL: This expression is built on a different base than the one we want. Rebuild it and return the root of the new tree

Overrides:

rebuildOn in class QueryKeyExpression

See Also:

• Expression.cloneUsing(Expression newBase)

rebuildOn

public Expression rebuildOn(Expression oldBase,
 Expression newBase)

INTERNAL: A special version of rebuildOn where the newBase need not be a new ExpressionBuilder but any expression.

For nested joined attributes, the joined attribute query must have its joined attributes rebuilt relative to it.

Overrides:

rebuildOn in class QueryKeyExpression

descriptionOfNodeType

public String descriptionOfNodeType()

INTERNAL: Used for debug printing.

Overrides:

descriptionOfNodeType in class QueryKeyExpression

existingDerivedTable

public Expression existingDerivedTable(DatabaseTable table)

INTERNAL:

Overrides:

existingDerivedTable in class DataExpression

getOwnedTables

public List<DatabaseTable> getOwnedTables()

Exclude any tables defined by base.

Overrides:

getOwnedTables in class QueryKeyExpression

getDescriptor

public ClassDescriptor getDescriptor()

Overrides:

getDescriptor in class ObjectExpression

getField

public DatabaseField getField()

INTERNAL:

Overrides:

getField in class QueryKeyExpression

getFields

public Vector getFields()

INTERNAL: Return all the fields

Overrides:

getFields in class QueryKeyExpression

getSelectionFields

public List<DatabaseField> getSelectionFields(ReadQuery query)

INTERNAL:

Overrides:

getSelectionFields in class QueryKeyExpression

getMapping

public CollectionMapping getMapping()

Overrides:

getMapping in class QueryKeyExpression

getQueryKeyOrNull

public QueryKey getQueryKeyOrNull()

Overrides:

getQueryKeyOrNull in class QueryKeyExpression

isAttribute

public boolean isAttribute()

INTERNAL: Return if the expression is for a direct mapped attribute.

Overrides:

isAttribute in class QueryKeyExpression

isMapEntryExpression

public boolean isMapEntryExpression()

INTERNAL:

Overrides:

isMapEntryExpression in class Expression

mappingCriteria

public Expression mappingCriteria(Expression base)

INTERNAL: Mapping criteria will be provided by the base expression

Overrides:

mappingCriteria in class QueryKeyExpression

shouldReturnMapEntry

public boolean shouldReturnMapEntry()

validateNode

public void validateNode()

Do any required validation for this node. Throw an exception if it's incorrect.

Overrides:

validateNode in class QueryKeyExpression

writeDescriptionOn

public void writeDescriptionOn(BufferedWriter writer)
                        throws IOException

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

Overrides:

writeDescriptionOn in class QueryKeyExpression

Throws:

IOException