HyperSQL Database 2.7.4 · org.hsqldb.ExpressionOp · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
pack-priv DateTimeFormatter	dateTimeFormatter
pack-priv static final ExpressionOp	limitOneExpression
pack-priv String	template

Constructor Summary

Access	Constructor and Description
pack-priv	ExpressionOp(int type, Expression[] exprArray) Creates a multiple arg operation expression
pack-priv	ExpressionOp(int type, Expression left, Expression right) Creates a special binary operation expression
pack-priv	ExpressionOp(Expression e, Type dataType) creates a CAST expression
pack-priv	ExpressionOp(Expression e, Type dataType, String template) creates a CAST expression with template when template is null, it is a simple CAST
pack-priv	ExpressionOp(Expression e) creates a special conversion for time / timestamp comparison

Method Summary

Modifier and Type	Method and Description
protected String	describe(Session session, int blanks) Overrides org.hsqldb.Expression.describe.
public boolean	equals(Expression other) Overrides org.hsqldb.Expression.equals. SIMPLE_COLUMN expressions can be of different Expression subclass types
public static Expression	getCastExpression(Session session, Expression e, Type dataType)
public static Expression	getConvertExpression(Session session, Expression e, Type dataType)
public String	getSQL() Overrides org.hsqldb.Expression.getSQL. For use with CHECK constraints.
public Object	getValue(Session session) Overrides org.hsqldb.Expression.getValue.
public List<Expression>	resolveColumnReferences(Session session, RangeGroup rangeGroup, int rangeCount, RangeGroup[] rangeGroups, List<Expression> unresolvedSet, boolean acceptsSequences) Overrides org.hsqldb.Expression.resolveColumnReferences.
public void	resolveTypes(Session session, Expression parent) Overrides org.hsqldb.Expression.resolveTypes.
pack-priv void	resolveTypesForAlternative(Session session)
pack-priv void	resolveTypesForCaseWhen(Session session, Expression parent) For CASE WHEN and its special cases section 9.3 of the SQL standard on type aggregation is implemented.

Inherited from org.hsqldb.Expression:: checkValidCheckConstraint collectAllExpressions collectAllSubqueries collectObjectNames collectRangeVariables collectRangeVariables convertToType costFactor countNulls duplicate equals equals equals getAggregatedValue getAlias getCheckSelect getColumn getColumnIndex getColumnName getCondition getConstantValueNoCheck getContextSQL getDataType getDegree getIndexableExpression getJoinRangeVariables getLeftNode getNodeDataType getNodeDataTypes getNullability getRangeVariable getResult getRightNode getRowValue getSimpleName getSubqueries getSubType getTable getType getUnkeyedColumns getValue getValueClassName hasAggregate hasCondition hashCode hasNonDeterministicFunction hasReference hasReference insertValuesIntoSubqueryTable isComposedOf isComposedOf isConditionRangeVariable isCorrelated isDistinctAggregate isDynamicParam isFalse isIndexable isSelfAggregate isTrue isUnresolvedParam materialise prepareTable replaceAliasInOrderBy replaceColumnReferences replaceExpressions replaceNode replaceRangeVariables resetColumnReferences resolveCheckOrGenExpression resolveColumnReferences resolveColumnSet resolveColumnSet resolveGrantFilter setAggregate setAlias setAsConstantValue setAsConstantValue setAttributesAsColumn setCollation setCondition setCorrelatedReferences setDataType setLeftNode setNoOptimisation setRightNode setSubType swapLeftAndRightNodes testCondition updateAggregatingValue updateAggregatingValue

Field Detail

dateTimeFormatter	back to summary
pack-priv DateTimeFormatter dateTimeFormatter

limitOneExpression	back to summary
pack-priv static final ExpressionOp limitOneExpression

template	back to summary
pack-priv String template

Constructor Detail

ExpressionOp	back to summary
pack-priv ExpressionOp(int type, Expression[] exprArray) Creates a multiple arg operation expression

ExpressionOp	back to summary
pack-priv ExpressionOp(int type, Expression left, Expression right) Creates a special binary operation expression

ExpressionOp	back to summary
pack-priv ExpressionOp(Expression e, Type dataType) creates a CAST expression

ExpressionOp	back to summary
pack-priv ExpressionOp(Expression e, Type dataType, String template) creates a CAST expression with template when template is null, it is a simple CAST

ExpressionOp	back to summary
pack-priv ExpressionOp(Expression e) creates a special conversion for time / timestamp comparison

Method Detail

describe	back to summary
protected String describe(Session session, int blanks) Overrides org.hsqldb.Expression.describe.

equals	back to summary
public boolean equals(Expression other) Overrides org.hsqldb.Expression.equals. Doc from org.hsqldb.Expression.equals. SIMPLE_COLUMN expressions can be of different Expression subclass types

equals

back to summary

public boolean equals(Expression other)

Overrides org.hsqldb.Expression.equals.

Doc from org.hsqldb.Expression.equals.

SIMPLE_COLUMN expressions can be of different Expression subclass types

getCastExpression	back to summary
public static Expression getCastExpression(Session session, Expression e, Type dataType)

getConvertExpression	back to summary
public static Expression getConvertExpression(Session session, Expression e, Type dataType)

getSQL	back to summary
public String getSQL() Overrides org.hsqldb.Expression.getSQL. Doc from org.hsqldb.Expression.getSQL. For use with CHECK constraints. Under development. Currently supports a subset of expressions and is suitable for CHECK search conditions that refer only to the inserted/updated row. For full DDL reporting of VIEW select queries and CHECK search conditions, future improvements here are dependent upon improvements to SELECT query parsing, so that it is performed in a number of passes. An early pass should result in the query turned into an Expression tree that contains the information in the original SQL without any alterations, and with tables and columns all resolved. This Expression can then be preserved for future use. Table and column names that are not user-defined aliases should be kept as the HsqlName structures so that table or column renaming is reflected in the precompiled query.

getSQL

back to summary

public String getSQL()

Overrides org.hsqldb.Expression.getSQL.

Doc from org.hsqldb.Expression.getSQL.

For use with CHECK constraints. Under development. Currently supports a subset of expressions and is suitable for CHECK search conditions that refer only to the inserted/updated row. For full DDL reporting of VIEW select queries and CHECK search conditions, future improvements here are dependent upon improvements to SELECT query parsing, so that it is performed in a number of passes. An early pass should result in the query turned into an Expression tree that contains the information in the original SQL without any alterations, and with tables and columns all resolved. This Expression can then be preserved for future use. Table and column names that are not user-defined aliases should be kept as the HsqlName structures so that table or column renaming is reflected in the precompiled query.

getValue	back to summary
public Object getValue(Session session) Overrides org.hsqldb.Expression.getValue.

resolveColumnReferences	back to summary
public List<Expression> resolveColumnReferences(Session session, RangeGroup rangeGroup, int rangeCount, RangeGroup[] rangeGroups, List<Expression> unresolvedSet, boolean acceptsSequences) Overrides org.hsqldb.Expression.resolveColumnReferences.

resolveTypes	back to summary
public void resolveTypes(Session session, Expression parent) Overrides org.hsqldb.Expression.resolveTypes.

resolveTypesForAlternative	back to summary
pack-priv void resolveTypesForAlternative(Session session)

resolveTypesForCaseWhen	back to summary
pack-priv void resolveTypesForCaseWhen(Session session, Expression parent) For CASE WHEN and its special cases section 9.3 of the SQL standard on type aggregation is implemented.

public Class ExpressionOp

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail