java.lang.Object
- org.alfresco.util.SearchLanguageConversion

```
public class SearchLanguageConversion
extends Object
```
Helper class to provide conversions between different search languages

Author:

Derek Hulley

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class SearchLanguageConversion.LanguageDefinition
Simple store of special characters for a given query language

Field Summary

Fields
Modifier and Type	Field	Description
`static SearchLanguageConversion.LanguageDefinition`	`DEF_CIFS`	CIFS name patch query language summary: Escape: \ (but not used) Single char search: ? Multiple char search: * Reserved: "*\<>?/:\|¬£%&+;
`static SearchLanguageConversion.LanguageDefinition`	`DEF_LUCENE`	Lucene syntax summary: Lucene Query Parser
`static SearchLanguageConversion.LanguageDefinition`	`DEF_LUCENE_INTERNAL`
`static SearchLanguageConversion.LanguageDefinition`	`DEF_REGEX`	Regular expression query language summary: Escape: \ Single char search: . Multiple char search: .* Reserved: \*.+?^$(){}[]\|
`static SearchLanguageConversion.LanguageDefinition`	`DEF_SQL_LIKE`	SQL like query language summary: Escape: \ Single char search: _ Multiple char search: % Reserved: \%_
`static SearchLanguageConversion.LanguageDefinition`	`DEF_XPATH_LIKE`	XPath like query language summary: Escape: \ Single char search: _ Multiple char search: % Reserved: \%_

Constructor Summary

Constructors
Constructor Description

SearchLanguageConversion()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static String`	`convert(SearchLanguageConversion.LanguageDefinition from, SearchLanguageConversion.LanguageDefinition to, String query)`
`static String`	`convertCifsToLucene(String cifsNamePath)`	Convert a CIFS name path into the equivalent Lucene query.
`static String`	`convertSQLLikeToLucene(String sqlLikeClause)`	Convert a sql like function clause into a Lucene query.
`static String`	`convertSQLLikeToRegex(String sqlLikeClause)`	Convert a sql like function clause into a regex query.
`static String`	`convertXPathLikeToLucene(String xpathLikeClause)`	Convert an xpath like function clause into a Lucene query.
`static String`	`convertXPathLikeToRegex(String xpathLikeClause)`	Convert an xpath like function clause into a regex query.
`static String`	`escapeForLucene(String str)`	Escape a string according to the Lucene query syntax.
`static String`	`escapeForRegex(String str)`	Escape a string according to the regex language syntax.
`static String`	`escapeForXPathLike(String str)`	Escape a string according to the XPath like function syntax.
`static String`	`escapeLuceneQuery(String query)`	We have to escape lucene query strings outside of lucene - as we do not depend on any given version of lucene The escaping here is taken from lucene 4.9.0 The reserved (and escaped characters) are: \ + - ! ( ) : ^ [ ] " { } ~ * ? \| & / The escape character is \
`static String[]`	`tokenizeString(String query)`

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

- Field Detail
  - DEF_SQL_LIKE
```
public static SearchLanguageConversion.LanguageDefinition DEF_SQL_LIKE
```
    SQL like query language summary:
    
    Escape: \
    
    Single char search: _
    
    Multiple char search: %
    
    Reserved: \%_
  - DEF_XPATH_LIKE
```
public static SearchLanguageConversion.LanguageDefinition DEF_XPATH_LIKE
```
    XPath like query language summary:
    
    Escape: \
    
    Single char search: _
    
    Multiple char search: %
    
    Reserved: \%_
  - DEF_REGEX
```
public static SearchLanguageConversion.LanguageDefinition DEF_REGEX
```
    Regular expression query language summary:
    
    Escape: \
    
    Single char search: .
    
    Multiple char search: .*
    
    Reserved: \*.+?^$(){}[]|
  - DEF_LUCENE
```
public static SearchLanguageConversion.LanguageDefinition DEF_LUCENE
```
    Lucene syntax summary: Lucene Query Parser
  - DEF_LUCENE_INTERNAL
```
public static SearchLanguageConversion.LanguageDefinition DEF_LUCENE_INTERNAL
```
  - DEF_CIFS
```
public static SearchLanguageConversion.LanguageDefinition DEF_CIFS
```
    CIFS name patch query language summary:
    
    Escape: \ (but not used)
    
    Single char search: ?
    
    Multiple char search: *
    
    Reserved: "*\<>?/:|¬£%&+;
- Constructor Detail
  - SearchLanguageConversion
```
public SearchLanguageConversion()
```
- Method Detail
  - escapeForXPathLike
```
public static String escapeForXPathLike(String str)
```
    Escape a string according to the XPath like function syntax.
    
    Parameters:
    
    str - the string to escape
    
    Returns:
    
    Returns the escaped string
  - escapeForRegex
```
public static String escapeForRegex(String str)
```
    Escape a string according to the regex language syntax.
    
    Parameters:
    
    str - the string to escape
    
    Returns:
    
    Returns the escaped string
  - escapeForLucene
```
public static String escapeForLucene(String str)
```
    Escape a string according to the Lucene query syntax.
    
    Parameters:
    
    str - the string to escape
    
    Returns:
    
    Returns the escaped string
  - convertXPathLikeToRegex
```
public static String convertXPathLikeToRegex(String xpathLikeClause)
```
    Convert an xpath like function clause into a regex query.
    
    Parameters:
    
    xpathLikeClause - String
    
    Returns:
    
    Returns a valid regular expression that is equivalent to the given xpath like clause.
  - convertXPathLikeToLucene
```
public static String convertXPathLikeToLucene(String xpathLikeClause)
```
    Convert an xpath like function clause into a Lucene query.
    
    Parameters:
    
    xpathLikeClause - String
    
    Returns:
    
    Returns a valid Lucene expression that is equivalent to the given xpath like clause.
  - convertSQLLikeToLucene
```
public static String convertSQLLikeToLucene(String sqlLikeClause)
```
    Convert a sql like function clause into a Lucene query.
    
    Parameters:
    
    sqlLikeClause - String
    
    Returns:
    
    Returns a valid Lucene expression that is equivalent to the given sql like clause.
  - convertSQLLikeToRegex
```
public static String convertSQLLikeToRegex(String sqlLikeClause)
```
    Convert a sql like function clause into a regex query.
    
    Parameters:
    
    sqlLikeClause - String
    
    Returns:
    
    Returns a valid regular expression that is equivalent to the given sql like clause.
  - convertCifsToLucene
```
public static String convertCifsToLucene(String cifsNamePath)
```
    Convert a CIFS name path into the equivalent Lucene query.
    
    Parameters:
    
    cifsNamePath - the CIFS named path
    
    Returns:
    
    Returns a valid Lucene expression that is equivalent to the given CIFS name path
  - convert
```
public static String convert(SearchLanguageConversion.LanguageDefinition from,
                             SearchLanguageConversion.LanguageDefinition to,
                             String query)
```
  - escapeLuceneQuery
```
public static String escapeLuceneQuery(String query)
```
    We have to escape lucene query strings outside of lucene - as we do not depend on any given version of lucene The escaping here is taken from lucene 4.9.0 The reserved (and escaped characters) are: \ + - ! ( ) : ^ [ ] " { } ~ * ? | & / The escape character is \
    
    Parameters:
    
    query - String
    
    Returns:
    
    - the escaped query string
  - tokenizeString
```
public static String[] tokenizeString(String query)
```

Class SearchLanguageConversion

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEF_SQL_LIKE

DEF_XPATH_LIKE

DEF_REGEX

DEF_LUCENE

DEF_LUCENE_INTERNAL

DEF_CIFS

Constructor Detail

SearchLanguageConversion

Method Detail

escapeForXPathLike

escapeForRegex

escapeForLucene

convertXPathLikeToRegex

convertXPathLikeToLucene

convertSQLLikeToLucene

convertSQLLikeToRegex

convertCifsToLucene

convert

escapeLuceneQuery

tokenizeString