110 lines
3.3 KiB
Java
110 lines
3.3 KiB
Java
/**
|
|
* This is free and unencumbered software released into the public domain.
|
|
*
|
|
* Anyone is free to copy, modify, publish, use, compile, sell, or
|
|
* distribute this software, either in source code form or as a compiled
|
|
* binary, for any purpose, commercial or non-commercial, and by any
|
|
* means.
|
|
*
|
|
* In jurisdictions that recognize copyright laws, the author or authors
|
|
* of this software dedicate any and all copyright interest in the
|
|
* software to the public domain. We make this dedication for the benefit
|
|
* of the public at large and to the detriment of our heirs and
|
|
* successors. We intend this dedication to be an overt act of
|
|
* relinquishment in perpetuity of all present and future rights to this
|
|
* software under copyright law.
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* For more information, please refer to <http://unlicense.org/>
|
|
*/
|
|
|
|
package org.mariotaku.querybuilder;
|
|
|
|
public class Columns implements Selectable {
|
|
|
|
private final AbsColumn[] columns;
|
|
|
|
public Columns(String... columns) {
|
|
this(Columns.fromStrings(columns));
|
|
}
|
|
|
|
public Columns(final AbsColumn... columns) {
|
|
this.columns = columns;
|
|
}
|
|
|
|
private static Column[] fromStrings(String... columnsString) {
|
|
final Column[] columns = new Column[columnsString.length];
|
|
for (int i = 0, j = columnsString.length; i < j; i++) {
|
|
columns[i] = new Column(columnsString[i]);
|
|
}
|
|
return columns;
|
|
}
|
|
|
|
@Override
|
|
public String getSQL() {
|
|
return Utils.toString(columns, ',', true);
|
|
}
|
|
|
|
public abstract static class AbsColumn implements Selectable {
|
|
|
|
}
|
|
|
|
public static class AllColumn extends AbsColumn {
|
|
|
|
private final Table table;
|
|
|
|
public AllColumn() {
|
|
this(null);
|
|
}
|
|
|
|
public AllColumn(final Table table) {
|
|
this.table = table;
|
|
}
|
|
|
|
@Override
|
|
public String getSQL() {
|
|
return table != null ? table.getSQL() + ".*" : "*";
|
|
}
|
|
|
|
}
|
|
|
|
public static class Column extends AbsColumn {
|
|
|
|
private final Table table;
|
|
private final String columnName, alias;
|
|
|
|
public Column(final String columnName) {
|
|
this(null, columnName, null);
|
|
}
|
|
|
|
public Column(final String columnName, final String alias) {
|
|
this(null, columnName, alias);
|
|
}
|
|
|
|
public Column(final Table table, final String columnName) {
|
|
this(table, columnName, null);
|
|
}
|
|
|
|
public Column(final Table table, final String columnName, final String alias) {
|
|
if (columnName == null) throw new IllegalArgumentException("");
|
|
this.table = table;
|
|
this.columnName = columnName;
|
|
this.alias = alias;
|
|
}
|
|
|
|
@Override
|
|
public String getSQL() {
|
|
final String col = table != null ? table.getSQL() + "." + columnName : columnName;
|
|
return alias != null ? col + " AS " + alias : col;
|
|
}
|
|
}
|
|
|
|
}
|