Package com._1c.g5.v8.dt.ql.resource

Class AliasComputer

java.lang.Object
com._1c.g5.v8.dt.ql.resource.AliasComputer
Direct Known Subclasses:
AliasComputerDcs
public class AliasComputer extends Object
Handler for aliases in select query

  • Field Details

  • Constructor Details

    • AliasComputer

      public AliasComputer()

  • Method Details

    • getDefaultFieldName

      public static String getDefaultFieldName(boolean isRussian)
      Gets default field name
      Parameters:
      isRussian - true if actual script variant is Russian, false otherwise
      Returns:
      default field name, never null

    • getAliasWithoutRepeat

      public static CaseInsensitiveString getAliasWithoutRepeat(CaseInsensitiveString alias, Set<CaseInsensitiveString> announcesAlias, boolean isExpr, boolean isRussian)
      Compute unique alias
      Parameters:
      alias - original alias
      announcesAlias - aliases which have been created earlier
      isExpr - if alias for AbstractExpression
      Returns:
      unique alias: 1) isExpr == false then return the first element isn't contained in announcesAlias from [ alias, alias1, alias2, ...] 2) isExpr == true then return the first element isn't contained in announcesAlias from [ DefaultColumnName1, DefaultColumnName2, DefaultColumnName3, ...]

    • fillAliasForSelectFields

      public Set<CaseInsensitiveString> fillAliasForSelectFields(List<QuerySchemaExpression> allFields, List<QuerySchemaSource> allSources, IDynamicDbViewFieldComputer dynamicDbViewComputer, boolean isRussian)
      Fills alias for select fields, if they don't have it
      Parameters:
      allFields - all select fields, can't be null
      allSources - all sources, can be null
      dynamicDbViewComputer - IDynamicDbViewFieldComputer, can be null, in this case aliases will be computed by string representation of expressions
      isRussian - true if aliases computing for Russian script variant, false otherwise
      Returns:
      all aliases, never null

    • fillAliasForFromSection

      public void fillAliasForFromSection(QuerySchemaOperator operator)
      Fills alias for 'from' section, if they don't have it
      Parameters:
      operator - processing QuerySchemaOperator, can't be null

    • getNameAliasCommonExpression

      public String getNameAliasCommonExpression(CommonExpression expr, IDynamicDbViewFieldComputer dynamicDbViewComputer, boolean isRussian)
      Gets name alias from CommonExpression - split by '.' and get last
      Parameters:
      expr - processing CommonExpression, can be null
      dynamicDbViewComputer - IDynamicDbViewFieldComputer, can be null, in this case aliases will be computed by string representation of expressions
      isRussian - true if aliases computing for Russian script variant, false otherwise
      Returns:
      if expr == null returns null, else returns last part of common expression

    • getNameAliasTableExpression

      public String getNameAliasTableExpression(AbstractQuerySchemaTable table, String alias)
      Gets name alias from AbstractTable - split by '.' and get last
      Parameters:
      table - processing table, can be null
      alias - current alias, can be null
      Returns:
      if table == null returns null, if alias != null returns alias, if alias == null returns last part of table name

    • getAlias

      public CaseInsensitiveString getAlias(CaseInsensitiveString name, Set<CaseInsensitiveString> announcesAlias, boolean isExpr, boolean isRussian)
      Getting actual alias for name
      Parameters:
      name - of expression, can't be null
      announcesAlias - aliases which have been used, can't be null
      isExpr - true, if this name corresponding to expression not instance of CommonExpression
      isRussian - true if actual script variant is Russian, false otherwise
      Returns:
      alias

    • getQSExpressionName

      public AliasComputer.PairAliasIsExpr getQSExpressionName(QuerySchemaExpression expression, IDynamicDbViewFieldComputer dynamicDbViewComputer, boolean isRussian)
      Gets name field by it expression
      Parameters:
      expression - processing expression, can't be null
      isRussian - true if actual script variant is Russian, false otherwise
      Returns:
      QlDerivedStateComputer.PairAliasIsExpr

    • readAllFillAliasFrom

      public Set<CaseInsensitiveString> readAllFillAliasFrom(QuerySchemaOperator operator)
      Read all alias from section 'from' (including 'join' section)
      Parameters:
      operator - processing QuerySchemaOperator, can't be null
      Returns:
      set of string with all aliases

    • readAllFillAliasFrom

      public Set<CaseInsensitiveString> readAllFillAliasFrom(QuerySchemaSource source)
      Read all alias from 1 source in section 'from' (including 'join' section)
      Parameters:
      source - processing source, can't be null
      Returns:
      set of string with all aliases

    • getNameAliasCommonExpressionForFieldOfNestedTable

      public String getNameAliasCommonExpressionForFieldOfNestedTable(CommonExpression expr, IDynamicDbViewFieldComputer dynamicDbViewComputer, boolean isRussian)
      Computes alias for field from nested table represented as CommonExpression
      Parameters:
      expr - processing expression, can't be null
      dynamicDbViewComputer - IDynamicDbViewFieldComputer, can be null, in this case aliases will be computed by string representation of expressions
      isRussian - true if aliases computing for Russian script variant, false otherwise
      Returns:
      computed alias, can be null if model of the query is not valid

    • readAllFillAliasFromJoins

      protected void readAllFillAliasFromJoins(List<AbstractQuerySchemaQuerySourceJoin> allJoins, Set<CaseInsensitiveString> announcedAlias)
      Read all alias from joins
      Parameters:
      allJoins - - processing joins AbstractQuerySchemaQuerySourceJoin
      announcedAlias - - container of alias

    • fillAliasFormJoins

      protected void fillAliasFormJoins(List<? extends AbstractQuerySchemaQuerySourceJoin> allJoins, Set<CaseInsensitiveString> announcedAlias)
      Fills all alias for sources from joins
      Parameters:
      allJoins - - processing joins AbstractQuerySchemaQuerySourceJoin
      announcedAlias - - container of alias