Package org.pgcodekeeper.core.database.ch.schema

Class ChConstraint

java.lang.Object
org.pgcodekeeper.core.database.base.schema.AbstractStatement
org.pgcodekeeper.core.database.ch.schema.ChAbstractStatement
org.pgcodekeeper.core.database.ch.schema.ChConstraint
All Implemented Interfaces:
IConstraint, ISearchPath, IStatement, ISubElement, IHashable
public class ChConstraint extends ChAbstractStatement implements IConstraint
Represents a ClickHouse table constraint (CHECK or ASSUME).

  • Constructor Details

    • ChConstraint

      public ChConstraint(String name, boolean isAssume)
      Creates a new ClickHouse constraint.
      Parameters:
      name - the name of the constraint
      isAssume - true if this is an ASSUME constraint, false for CHECK constraint

  • Method Details

    • setExpr

      public void setExpr(String expr)

    • setNotValid

      public void setNotValid(boolean notValid)

    • isNotValid

      public boolean isNotValid()

    • getCreationSQL

      public void getCreationSQL(SQLScript script)
      Description copied from interface: IStatement
      Generates the SQL statements needed to create this database object. This is an abstract method that must be implemented by subclasses to provide the specific CREATE SQL for each object type.
      Specified by:
      getCreationSQL in interface IStatement
      Parameters:
      script - the SQL script to append creation statements to

    • getDefinition

      public String getDefinition()
      Description copied from interface: IConstraint
      Gets the SQL definition of this constraint.
      Specified by:
      getDefinition in interface IConstraint
      Returns:
      the constraint definition

    • appendAlterSQL

      public ObjectState appendAlterSQL(IStatement newCondition, SQLScript script)
      Description copied from interface: IStatement
      Fill script with object changes and return change type
      Specified by:
      appendAlterSQL in interface IStatement
      Parameters:
      newCondition - new object state
      script - script to collect changes
      Returns:
      object change type

    • getDropSQL

      public void getDropSQL(SQLScript script, boolean optionExists)
      Description copied from interface: IStatement
      Generates DROP SQL for this statement.
      Specified by:
      getDropSQL in interface IStatement
      Overrides:
      getDropSQL in class AbstractStatement
      Parameters:
      script - the SQL script to append the DROP statement to
      optionExists - whether to include "IF EXISTS" in the DROP statement

    • getTableName

      public String getTableName()
      Description copied from interface: IConstraint
      Gets the name of the table this constraint belongs to.
      Specified by:
      getTableName in interface IConstraint
      Returns:
      the table name

    • getColumns

      public Collection<String> getColumns()
      Description copied from interface: IConstraint
      Gets the columns involved in this constraint.
      Specified by:
      getColumns in interface IConstraint
      Returns:
      a collection of column names

    • containsColumn

      public boolean containsColumn(String name)
      Description copied from interface: IConstraint
      Checks if this constraint involves the specified column.
      Specified by:
      containsColumn in interface IConstraint
      Parameters:
      name - the column name to check
      Returns:
      true if the column is part of this constraint

    • getLocation

      public ObjectLocation getLocation()
      Description copied from interface: IStatement
      Gets the location information for this statement.
      Specified by:
      getLocation in interface IStatement
      Overrides:
      getLocation in class AbstractStatement
      Returns:
      the location where this statement is defined

    • computeHash

      public void computeHash(Hasher hasher)
      Description copied from interface: IHashable
      Computes the hash of the implementing object using the provided hasher. The implementation should call appropriate put methods on the hasher for all fields that should contribute to the hash value.
      Specified by:
      computeHash in interface IHashable
      Parameters:
      hasher - the hasher instance to use for hash computation

    • compare

      public boolean compare(IStatement obj)
      Description copied from class: AbstractStatement
      This method does not account for nested child PgStatements. Shallow version of AbstractStatement.equals(Object)
      Specified by:
      compare in interface IStatement
      Overrides:
      compare in class AbstractStatement