db.sql.api.cmd.executor.IExecutor Maven / Gradle / Ivy
package db.sql.api.cmd.executor;
import db.sql.api.Cmd;
import db.sql.api.DbType;
import db.sql.api.SqlBuilderContext;
import db.sql.api.cmd.basic.ITable;
import db.sql.api.cmd.basic.ITableField;
import db.sql.api.tookit.CmdUtils;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.function.Consumer;
import java.util.stream.Collectors;
public interface IExecutor,
TABLE_FIELD extends ITableField
>
extends Cmd {
Map, Integer> cmdSorts();
List cmds();
void selectorExecute(DbType dbType);
/**
* 内联，用于获取自身
*
* @param consumer
* @return
*/
default T connect(Consumer consumer) {
return this.connect(true, consumer);
}
/**
* 内联，用于获取自身
*
* @param consumer
* @return
*/
default T connect(boolean when, Consumer consumer) {
if (!when) {
return (T) this;
}
consumer.accept((T) this);
return (T) this;
}
default Comparator comparator() {
return (o1, o2) -> {
Integer n1 = cmdSorts().get(o1.getClass());
Integer n2 = cmdSorts().get(o2.getClass());
if (n1 == null && n2 == null) {
return 0;
}
if (n1 == null) {
return 1;
}
if (n2 == null) {
return -1;
}
return n1.compareTo(n2);
};
}
default List sortedCmds() {
List cmdList = cmds();
if (cmdList == null || cmdList.isEmpty()) {
return cmdList;
}
Comparator comparator = comparator();
cmdList = cmdList.stream().sorted(comparator).collect(Collectors.toList());
return cmdList;
}
@Override
default StringBuilder sql(Cmd module, Cmd parent, SqlBuilderContext context, StringBuilder sqlBuilder) {
this.selectorExecute(context.getDbType());
return this.sql(context, sqlBuilder);
}
default StringBuilder sql(SqlBuilderContext context, StringBuilder sqlBuilder) {
this.selectorExecute(context.getDbType());
List cmdList = cmds();
if (cmdList == null || cmdList.isEmpty()) {
return sqlBuilder;
}
return this.sql(this.sortedCmds(), context, sqlBuilder);
}
default StringBuilder sql(List sortedCmds, SqlBuilderContext context, StringBuilder sqlBuilder) {
if (sortedCmds == null || sortedCmds.isEmpty()) {
return sqlBuilder;
}
return CmdUtils.join(this, this, context, sqlBuilder, sortedCmds);
}
}