com.goldencode.p2j.persist.orm

Class FqlToSqlConverter.ContainsRewriteData

java.lang.Object

com.goldencode.p2j.persist.orm.FqlToSqlConverter.FieldInfo

com.goldencode.p2j.persist.orm.FqlToSqlConverter.ContainsRewriteData

Enclosing class:

FqlToSqlConverter

private static class FqlToSqlConverter.ContainsRewriteData
extends FqlToSqlConverter.FieldInfo

Auxiliary date used for CONTAINS UDF call re-writing

Field Summary

Fields

Modifier and Type	Field and Description
boolean	alwaysFalse the condition is always false (is empty or invalid)
java.util.List<java.lang.String>	args the holder for the generated query parameters
java.util.List<java.util.List<LogicalExpressionConverter.Term>>	cnf CNF representation of expr
java.lang.String	cteName CTE name
java.lang.String	expr CONTAINS UDF second argument value
java.lang.String	extentTable The extent table (for extent field).
FQLAst	fieldAst Field AST
boolean	forSorting Flag that word index is used for implicit sorting of the result set
Property	fp The field Property.
int	narg The argument index (if placeholder found).
private java.util.Map<java.lang.String,LogicalExpressionConverter.Term>	terms Distinct terms found in the expression
boolean	useCTE Flags that expression is good for using CTE

Fields inherited from class com.goldencode.p2j.persist.orm.FqlToSqlConverter.FieldInfo

extent, fldName, tblAlias, tblMetaKey, tblName

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ContainsRewriteData()

Method Summary

Modifier and Type	Method and Description
private void	containsCTE(java.lang.String schema, java.util.Optional<Dialect.WeightAggregator> aggregator, java.lang.StringBuilder weights, java.lang.StringBuilder sb) Generate common table expression for CONTAINS.
private void	containsCTE4UDF(java.lang.String schema, Dialect dialect, java.lang.StringBuilder weights, java.lang.StringBuilder sb) Generate common table expression for CONTAINS (no word tables).
void	containsQuery(java.lang.String schema, java.lang.StringBuilder sb) Generate a replacement for the CONTAINS UDF call.
boolean	containsWith(java.lang.String schema, java.util.Optional<Dialect.WeightAggregator> aggregator, java.lang.StringBuilder weights, java.lang.StringBuilder sb) Generate a WITH clause for the CONTAINS UDF call.
void	containsWith4UDF(java.lang.String schema, Dialect dialect, java.lang.StringBuilder weights, java.lang.StringBuilder sb) Generate a WITH clause for the CONTAINS UDF call (no word tables).
private void	onClause(java.lang.StringBuilder sb, java.lang.String walias, java.util.List<LogicalExpressionConverter.Term> andTerm, boolean caseSensitive) Generate an ON clause for a CONTAINS UDF call replacement query.
void	toCNF(boolean useMixedMode) Convert 'expr' to CNF
void	toRPN() Validate 'expr' by converting to RPN.
private void	weights(java.lang.StringBuilder weights, java.lang.StringBuilder sb, java.util.function.BiConsumer<java.lang.StringBuilder,java.lang.Runnable> aggregate, java.lang.String walias, java.util.List<LogicalExpressionConverter.Term> andTerm, boolean caseSensitive) Generate a 'weight' column for a CONTAINS UDF call replacement query.

Methods inherited from class java.lang.Object

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

Field Detail

fieldAst

public FQLAst fieldAst

Field AST

cteName

public java.lang.String cteName

CTE name

expr

public java.lang.String expr

CONTAINS UDF second argument value

cnf

public java.util.List<java.util.List<LogicalExpressionConverter.Term>> cnf

CNF representation of expr

terms

private java.util.Map<java.lang.String,LogicalExpressionConverter.Term> terms

Distinct terms found in the expression

useCTE

public boolean useCTE

Flags that expression is good for using CTE

narg

public int narg

The argument index (if placeholder found).

alwaysFalse

public boolean alwaysFalse

the condition is always false (is empty or invalid)

forSorting

public boolean forSorting

Flag that word index is used for implicit sorting of the result set

args

public java.util.List<java.lang.String> args

the holder for the generated query parameters

fp

public Property fp

The field Property.

extentTable

public java.lang.String extentTable

The extent table (for extent field).

Constructor Detail

ContainsRewriteData

private ContainsRewriteData()

Method Detail

containsQuery

public void containsQuery(java.lang.String schema,
                          java.lang.StringBuilder sb)

Generate a replacement for the CONTAINS UDF call.

Parameters:

schema - schema name

sb - output buffer

toCNF

public void toCNF(boolean useMixedMode)

Convert 'expr' to CNF

Parameters:

useMixedMode - Set 'useCTE' flag based on the expression complexity.

toRPN

public void toRPN()

Validate 'expr' by converting to RPN.

containsWith

public boolean containsWith(java.lang.String schema,
                            java.util.Optional<Dialect.WeightAggregator> aggregator,
                            java.lang.StringBuilder weights,
                            java.lang.StringBuilder sb)

Generate a WITH clause for the CONTAINS UDF call.

Parameters:

schema - The schema name.

aggregator - The aggregate helper.

weights - The holder for ORDER BY components (used for implicit sorting).

sb - The output buffer.

Returns:

true if a new term in the WITH clause.

containsWith4UDF

public void containsWith4UDF(java.lang.String schema,
                             Dialect dialect,
                             java.lang.StringBuilder weights,
                             java.lang.StringBuilder sb)

Generate a WITH clause for the CONTAINS UDF call (no word tables).

Parameters:

schema - The schema name.

dialect - The database dialect.

weights - The holder for ORDER BY components (used for implicit sorting).

sb - The output buffer.

containsCTE4UDF

private void containsCTE4UDF(java.lang.String schema,
                             Dialect dialect,
                             java.lang.StringBuilder weights,
                             java.lang.StringBuilder sb)

Generate common table expression for CONTAINS (no word tables).

Parameters:

schema - The schema name.

dialect - The database dialect.

weights - The holder for ORDER BY components (used for implicit sorting).

sb - The output buffer.

containsCTE

private void containsCTE(java.lang.String schema,
                         java.util.Optional<Dialect.WeightAggregator> aggregator,
                         java.lang.StringBuilder weights,
                         java.lang.StringBuilder sb)

Generate common table expression for CONTAINS.

Parameters:

schema - The schema name.

aggregator - The aggregate helper.

weights - The holder for ORDER BY components (used for implicit sorting).

sb - The output buffer.

onClause

private void onClause(java.lang.StringBuilder sb,
                      java.lang.String walias,
                      java.util.List<LogicalExpressionConverter.Term> andTerm,
                      boolean caseSensitive)

Generate an ON clause for a CONTAINS UDF call replacement query.

Parameters:

sb - The output buffer.

walias - The word table alias.

andTerm - The list of tokens in the AND term of the CNF.

caseSensitive - Flag indicating that field is case-sensitive.

weights

private void weights(java.lang.StringBuilder weights,
                     java.lang.StringBuilder sb,
                     java.util.function.BiConsumer<java.lang.StringBuilder,java.lang.Runnable> aggregate,
                     java.lang.String walias,
                     java.util.List<LogicalExpressionConverter.Term> andTerm,
                     boolean caseSensitive)

Generate a 'weight' column for a CONTAINS UDF call replacement query.

Parameters:

weights - The holder for ORDER BY components (used for implicit sorting).

sb - The output buffer.

aggregate - The aggregate wrapper.

walias - The word table alias.

andTerm - The list of tokens in the AND term of the CNF.

caseSensitive - Flag indicating that field is case-sensitive.