java.lang.Object
- org.teiid.language.visitor.AbstractLanguageVisitor
- - org.teiid.language.visitor.SQLStringVisitor

All Implemented Interfaces:

LanguageObjectVisitor

Direct Known Subclasses:

CassandraSQLVisitor, IckleConversionVisitor, N1QLVisitor, SimpleDBSQLVisitor, SpreadsheetCriteriaVisitor, SQLConversionVisitor
```
public class SQLStringVisitor
extends AbstractLanguageVisitor
```
Creates a SQL string for a LanguageObject subtree. Instances of this class are not reusable, and are not thread-safe.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface SQLStringVisitor.Substitutor

Field Summary

Fields
Modifier and Type	Field	Description
`protected StringBuilder`	`buffer`
`protected boolean`	`shortNameOnly`
`static String`	`TEIID_NATIVE_QUERY`
`protected static String`	`UNDEFINED`
`protected static String`	`UNDEFINED_PARAM`

Constructor Summary

Constructors
Constructor Description

SQLStringVisitor()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`append(List<? extends LanguageObject> items)`	Simple utility to append a list of language objects to the current buffer by creating a comma-separated list.
`void`	`append(LanguageObject obj)`	Appends the string form of the LanguageObject to the current buffer.
`protected void`	`append(LanguageObject[] items)`	Simple utility to append an array of language objects to the current buffer by creating a comma-separated list.
`protected void`	`appendBaseName(NamedTable obj)`
`protected void`	`appendCallStart(Call call)`
`protected void`	`appendLateralKeyword()`
`protected void`	`appendLiteral(Literal obj, Class<?> type)`
`protected void`	`appendNestedCondition(AndOr parent, Condition condition)`
`protected void`	`appendQuantifier(SubqueryComparison obj)`
`protected void`	`appendRightComparison(Comparison obj)`
`protected void`	`appendSetOperation(SetQuery.Operation operation)`
`protected void`	`appendSetQuery(SetQuery parent, QueryExpression obj, boolean right)`
`protected void`	`appendWithKeyword(With obj)`
`protected String`	`escapeString(String str, String quote)`	Creates a SQL-safe string.
`protected String`	`getInsertKeyword()`
`protected String`	`getLikeRegexString()`
`protected String`	`getName(AbstractMetadataRecord object)`	Gets the name of a group or element from the RuntimeMetadata
`static String`	`getRecordName(AbstractMetadataRecord object)`	Get the name in source or the name if the name in source is not set.
`static String`	`getShortName(String elementName)`
`protected String`	`getSourceComment(Command command)`
`static String`	`getSQLString(LanguageObject obj)`	Gets the SQL string representation for a given LanguageObject.
`protected String`	`getUpsertKeyword()`
`protected boolean`	`isInfixFunction(String function)`
`static void`	`parseNativeQueryParts(String nativeQuery, List<Argument> list, StringBuilder stringBuilder, SQLStringVisitor.Substitutor substitutor)`
`protected String`	`replaceElementName(String group, String element)`	Take the specified derived group and element short names and determine a replacement element name to use instead.
`protected boolean`	`shouldNestSetChild(SetQuery parent, QueryExpression obj, boolean right)`
`String`	`toString()`
`protected boolean`	`useAsInGroupAlias()`	Indicates whether group alias should be of the form "...FROM groupA AS X" or "...FROM groupA X".
`protected boolean`	`useParensForJoins()`
`protected boolean`	`useParensForLHSJoins()`	If a nested left hand join should have parens
`protected boolean`	`useParensForSetQueries()`
`protected boolean`	`useSelectLimit()`
`void`	`visit(AggregateFunction obj)`
`void`	`visit(AndOr obj)`
`void`	`visit(Argument obj)`
`void`	`visit(Array array)`
`void`	`visit(Call obj)`
`void`	`visit(ColumnReference obj)`
`void`	`visit(Comparison obj)`
`void`	`visit(Delete obj)`
`void`	`visit(DerivedColumn obj)`
`void`	`visit(DerivedTable obj)`
`void`	`visit(Exists obj)`
`void`	`visit(ExpressionValueSource obj)`
`void`	`visit(Function obj)`
`void`	`visit(GroupBy obj)`
`void`	`visit(In obj)`
`void`	`visit(Insert obj)`
`void`	`visit(IsDistinct isDistinct)`
`void`	`visit(IsNull obj)`
`void`	`visit(Join obj)`
`void`	`visit(Like obj)`
`void`	`visit(Limit obj)`
`void`	`visit(Literal obj)`
`void`	`visit(NamedProcedureCall obj)`
`void`	`visit(NamedTable obj)`
`void`	`visit(Not obj)`
`void`	`visit(OrderBy obj)`
`void`	`visit(Parameter obj)`
`void`	`visit(ScalarSubquery obj)`
`void`	`visit(SearchedCase obj)`
`void`	`visit(SearchedWhenClause obj)`
`void`	`visit(Select obj)`
`void`	`visit(SetClause clause)`
`void`	`visit(SetQuery obj)`
`void`	`visit(SortSpecification obj)`
`void`	`visit(SubqueryComparison obj)`
`void`	`visit(SubqueryIn obj)`
`void`	`visit(Update obj)`
`void`	`visit(WindowFrame windowFrame)`
`void`	`visit(WindowFunction windowFunction)`
`void`	`visit(WindowSpecification windowSpecification)`
`void`	`visit(With obj)`
`void`	`visit(WithItem obj)`

Methods inherited from class org.teiid.language.visitor.AbstractLanguageVisitor
visit, visitNode, visitNodes, visitNodes

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - TEIID_NATIVE_QUERY
```
public static final String TEIID_NATIVE_QUERY
```
    See Also:
    
    Constant Field Values
  - UNDEFINED
```
protected static final String UNDEFINED
```
    See Also:
    
    Constant Field Values
  - UNDEFINED_PARAM
```
protected static final String UNDEFINED_PARAM
```
    See Also:
    
    Constant Field Values
  - buffer
```
protected StringBuilder buffer
```
  - shortNameOnly
```
protected boolean shortNameOnly
```
- Constructor Detail
  - SQLStringVisitor
```
public SQLStringVisitor()
```
- Method Detail
  - getName
```
protected String getName(AbstractMetadataRecord object)
```
    Gets the name of a group or element from the RuntimeMetadata
    
    Returns:
    
    the name of that element or group as defined in the source
  - getRecordName
```
public static String getRecordName(AbstractMetadataRecord object)
```
    Get the name in source or the name if the name in source is not set.
    
    Returns:
  - append
```
public void append(LanguageObject obj)
```
    Appends the string form of the LanguageObject to the current buffer.
    
    Parameters:
    
    obj - the language object instance
  - append
```
protected void append(List<? extends LanguageObject> items)
```
    Simple utility to append a list of language objects to the current buffer by creating a comma-separated list.
    
    Parameters:
    
    items - a list of LanguageObjects
  - append
```
protected void append(LanguageObject[] items)
```
    Simple utility to append an array of language objects to the current buffer by creating a comma-separated list.
    
    Parameters:
    
    items - an array of LanguageObjects
  - escapeString
```
protected String escapeString(String str,
                              String quote)
```
    Creates a SQL-safe string. Simply replaces all occurrences of ' with ''
    
    Parameters:
    
    str - the input string
    
    Returns:
    
    a SQL-safe string
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - visit
```
public void visit(AggregateFunction obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Comparison obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendRightComparison
```
protected void appendRightComparison(Comparison obj)
```
  - visit
```
public void visit(AndOr obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendNestedCondition
```
protected void appendNestedCondition(AndOr parent,
                                     Condition condition)
```
  - visit
```
public void visit(Delete obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - replaceElementName
```
protected String replaceElementName(String group,
                                    String element)
```
    Take the specified derived group and element short names and determine a replacement element name to use instead. Most commonly, this is used to strip the group name if the group is a pseudo-group (DUAL) or the element is a pseudo-group (ROWNUM). It may also be used to strip special information out of the name in source value in some specialized cases. By default, this method returns null, indicating that the normal group and element name logic should be used (group + "." + element). Subclasses should override and implement this method if desired.
    
    Parameters:
    
    group - Group name, may be null
    
    element - Element name, never null
    
    Returns:
    
    Replacement element name to be used as is (no modification will occur)
    
    Since:
    
    5.0
  - visit
```
public void visit(ColumnReference obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - getShortName
```
public static String getShortName(String elementName)
```
    Parameters:
    
    elementName -
    
    Returns:
    
    Since:
    
    4.3
  - visit
```
public void visit(Call obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendCallStart
```
protected void appendCallStart(Call call)
```
  - visit
```
public void visit(Exists obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - isInfixFunction
```
protected boolean isInfixFunction(String function)
```
  - visit
```
public void visit(Function obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(NamedTable obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendBaseName
```
protected void appendBaseName(NamedTable obj)
```
  - useAsInGroupAlias
```
protected boolean useAsInGroupAlias()
```
    Indicates whether group alias should be of the form "...FROM groupA AS X" or "...FROM groupA X". Certain data sources (such as Oracle) may not support the first form.
    
    Returns:
    
    boolean
  - visit
```
public void visit(GroupBy obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(In obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(DerivedTable obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendLateralKeyword
```
protected void appendLateralKeyword()
```
  - visit
```
public void visit(NamedProcedureCall obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Insert obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - getInsertKeyword
```
protected String getInsertKeyword()
```
  - getUpsertKeyword
```
protected String getUpsertKeyword()
```
  - visit
```
public void visit(ExpressionValueSource obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Parameter obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(IsNull obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Join obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - useParensForLHSJoins
```
protected boolean useParensForLHSJoins()
```
    If a nested left hand join should have parens
    
    Returns:
  - visit
```
public void visit(Like obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - getLikeRegexString
```
protected String getLikeRegexString()
```
  - visit
```
public void visit(Limit obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Literal obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendLiteral
```
protected void appendLiteral(Literal obj,
                             Class<?> type)
```
  - visit
```
public void visit(Not obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(OrderBy obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(SortSpecification obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Argument obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Select obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(SearchedCase obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(SearchedWhenClause obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - getSourceComment
```
protected String getSourceComment(Command command)
```
  - visit
```
public void visit(ScalarSubquery obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(DerivedColumn obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(SubqueryComparison obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendQuantifier
```
protected void appendQuantifier(SubqueryComparison obj)
```
  - visit
```
public void visit(SubqueryIn obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Update obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(SetClause clause)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(SetQuery obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendSetOperation
```
protected void appendSetOperation(SetQuery.Operation operation)
```
  - useParensForSetQueries
```
protected boolean useParensForSetQueries()
```
  - appendSetQuery
```
protected void appendSetQuery(SetQuery parent,
                              QueryExpression obj,
                              boolean right)
```
  - shouldNestSetChild
```
protected boolean shouldNestSetChild(SetQuery parent,
                                     QueryExpression obj,
                                     boolean right)
```
  - visit
```
public void visit(With obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - appendWithKeyword
```
protected void appendWithKeyword(With obj)
```
  - visit
```
public void visit(WithItem obj)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(WindowFunction windowFunction)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(WindowSpecification windowSpecification)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(WindowFrame windowFrame)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - visit
```
public void visit(Array array)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor
  - getSQLString
```
public static String getSQLString(LanguageObject obj)
```
    Gets the SQL string representation for a given LanguageObject.
    
    Parameters:
    
    obj - the root of the LanguageObject hierarchy that needs to be converted. This can be any subtree, and does not need to be a top-level command
    
    Returns:
    
    the SQL representation of that LanguageObject hierarchy
  - useParensForJoins
```
protected boolean useParensForJoins()
```
  - useSelectLimit
```
protected boolean useSelectLimit()
```
  - parseNativeQueryParts
```
public static void parseNativeQueryParts(String nativeQuery,
                                         List<Argument> list,
                                         StringBuilder stringBuilder,
                                         SQLStringVisitor.Substitutor substitutor)
```
  - visit
```
public void visit(IsDistinct isDistinct)
```
    Specified by:
    
    visit in interface LanguageObjectVisitor
    
    Overrides:
    
    visit in class AbstractLanguageVisitor

Class SQLStringVisitor

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.teiid.language.visitor.AbstractLanguageVisitor

Methods inherited from class java.lang.Object

Field Detail

TEIID_NATIVE_QUERY

UNDEFINED

UNDEFINED_PARAM

buffer

shortNameOnly

Constructor Detail

SQLStringVisitor

Method Detail

getName

getRecordName

append

append

append

escapeString

toString

visit

visit

appendRightComparison

visit

appendNestedCondition

visit

replaceElementName

visit

getShortName

visit

appendCallStart

visit

isInfixFunction

visit

visit

appendBaseName

useAsInGroupAlias

visit

visit

visit

appendLateralKeyword

visit

visit

getInsertKeyword

getUpsertKeyword

visit

visit

visit

visit

useParensForLHSJoins

visit

getLikeRegexString

visit

visit

appendLiteral

visit

visit

visit

visit

visit

visit

visit

getSourceComment

visit

visit

visit

appendQuantifier

visit

visit

visit

visit

appendSetOperation

useParensForSetQueries

appendSetQuery

shouldNestSetChild

visit

appendWithKeyword