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CreateSequenceGeneratorSnowflake.java
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CreateSequenceGeneratorSnowflake.java
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package liquibase.sqlgenerator.core;
import liquibase.database.Database;
import liquibase.database.core.*;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.statement.core.CreateSequenceStatement;
public class CreateSequenceGeneratorSnowflake extends CreateSequenceGenerator{
@Override
public int getPriority() {
return PRIORITY_DATABASE;
}
@Override
public boolean supports(CreateSequenceStatement statement, Database database) {
return database instanceof SnowflakeDatabase;
}
@Override
public ValidationErrors validate(CreateSequenceStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
ValidationErrors validationErrors = new ValidationErrors();
validationErrors.checkRequiredField("sequenceName", statement.getSequenceName());
validationErrors.checkDisallowedField("minValue", statement.getMinValue(), database, SnowflakeDatabase.class);
validationErrors.checkDisallowedField("maxValue", statement.getMaxValue(), database, SnowflakeDatabase.class);
validationErrors.checkDisallowedField("cacheSize", statement.getCacheSize(), database, SnowflakeDatabase.class);
validationErrors.checkDisallowedField("cycle", statement.getCycle(), database, SnowflakeDatabase.class);
validationErrors.checkDisallowedField("datatype", statement.getDataType(), database, SnowflakeDatabase.class);
validationErrors.checkDisallowedField("ordered", statement.getOrdered(), database, SnowflakeDatabase.class);
return validationErrors;
}
@Override
public Sql[] generateSql(CreateSequenceStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
StringBuilder queryStringBuilder = new StringBuilder();
queryStringBuilder.append("CREATE SEQUENCE ");
queryStringBuilder.append(database.escapeSequenceName(statement.getCatalogName(), statement.getSchemaName(), statement.getSequenceName()));
if (database instanceof SnowflakeDatabase) {
if (statement.getStartValue() != null) {
queryStringBuilder.append(" START WITH ").append(statement.getStartValue());
}
if (statement.getIncrementBy() != null) {
queryStringBuilder.append(" INCREMENT BY ").append(statement.getIncrementBy());
}
}
return new Sql[]{new UnparsedSql(queryStringBuilder.toString(), getAffectedSequence(statement))};
}
}