Package liquibase.sqlgenerator.core
Class ModifyDataTypeGenerator
- java.lang.Object
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- liquibase.sqlgenerator.core.AbstractSqlGenerator<ModifyDataTypeStatement>
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- liquibase.sqlgenerator.core.ModifyDataTypeGenerator
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- All Implemented Interfaces:
PrioritizedService
,SqlGenerator<ModifyDataTypeStatement>
public class ModifyDataTypeGenerator extends AbstractSqlGenerator<ModifyDataTypeStatement>
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Field Summary
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Fields inherited from interface liquibase.servicelocator.PrioritizedService
COMPARATOR
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Fields inherited from interface liquibase.sqlgenerator.SqlGenerator
EMPTY_SQL, PRIORITY_DATABASE, PRIORITY_DEFAULT
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Constructor Summary
Constructors Constructor Description ModifyDataTypeGenerator()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Sql[]
generateSql(ModifyDataTypeStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)
Generate the actual Sql for the given statement and database.protected Relation
getAffectedTable(ModifyDataTypeStatement statement)
protected String
getModifyString(Database database)
protected String
getPreDataTypeString(Database database)
boolean
supports(ModifyDataTypeStatement statement, Database database)
Does this generator support the given statement/database combination? Do not validate the statement with this method, only return if it can support it.ValidationErrors
validate(ModifyDataTypeStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)
Validate the data contained in the SqlStatement.Warnings
warn(ModifyDataTypeStatement modifyDataTypeStatement, Database database, SqlGeneratorChain sqlGeneratorChain)
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Methods inherited from class liquibase.sqlgenerator.core.AbstractSqlGenerator
generateRollbackStatementsIsVolatile, generateStatementsIsVolatile, getPriority, looksLikeFunctionCall
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Method Detail
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supports
public boolean supports(ModifyDataTypeStatement statement, Database database)
Description copied from interface:SqlGenerator
Does this generator support the given statement/database combination? Do not validate the statement with this method, only return if it can support it.- Specified by:
supports
in interfaceSqlGenerator<ModifyDataTypeStatement>
- Overrides:
supports
in classAbstractSqlGenerator<ModifyDataTypeStatement>
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warn
public Warnings warn(ModifyDataTypeStatement modifyDataTypeStatement, Database database, SqlGeneratorChain sqlGeneratorChain)
- Specified by:
warn
in interfaceSqlGenerator<ModifyDataTypeStatement>
- Overrides:
warn
in classAbstractSqlGenerator<ModifyDataTypeStatement>
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validate
public ValidationErrors validate(ModifyDataTypeStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)
Description copied from interface:SqlGenerator
Validate the data contained in the SqlStatement. If there are no errors, return an empty ValidationErrors object, not a null value. Liquibase will inspect the ValidationErrors result before attempting to call generateSql.
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generateSql
public Sql[] generateSql(ModifyDataTypeStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)
Description copied from interface:SqlGenerator
Generate the actual Sql for the given statement and database.
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getAffectedTable
protected Relation getAffectedTable(ModifyDataTypeStatement statement)
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getModifyString
protected String getModifyString(Database database)
- Returns:
- either "MODIFY" or "ALTER COLUMN" depending on the current db
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