org.jooq.impl.Fields Maven / Gradle / Ivy
/**
* Copyright (c) 2009-2014, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* This work is dual-licensed
* - under the Apache Software License 2.0 (the "ASL")
* - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
* =============================================================================
* You may choose which license applies to you:
*
* - If you're using this work with Open Source databases, you may choose
* either ASL or jOOQ License.
* - If you're using this work with at least one commercial database, you must
* choose jOOQ License
*
* For more information, please visit http://www.jooq.org/licenses
*
* Apache Software License 2.0:
* -----------------------------------------------------------------------------
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* jOOQ License and Maintenance Agreement:
* -----------------------------------------------------------------------------
* Data Geekery grants the Customer the non-exclusive, timely limited and
* non-transferable license to install and use the Software under the terms of
* the jOOQ License and Maintenance Agreement.
*
* This library is distributed with a LIMITED WARRANTY. See the jOOQ License
* and Maintenance Agreement for more details: http://www.jooq.org/licensing
*/
package org.jooq.impl;
import static org.jooq.impl.Utils.indexOrFail;
import java.util.Collection;
import org.jooq.Clause;
import org.jooq.Context;
import org.jooq.DataType;
import org.jooq.Field;
import org.jooq.Record;
import org.jooq.RecordType;
/**
* A simple wrapper for Field[], providing some useful lookup
* methods
*
* @author Lukas Eder
*/
class Fields extends AbstractQueryPart implements RecordType {
private static final long serialVersionUID = -6911012275707591576L;
Field[] fields;
Fields(Field... fields) {
this.fields = fields;
}
Fields(Collection> fields) {
this.fields = fields.toArray(new Field[fields.size()]);
}
@Override
public final int size() {
return fields.length;
}
@Override
@SuppressWarnings("unchecked")
public final Field field(Field field) {
if (field == null) {
return null;
}
// [#1802] Try finding an exact match (e.g. exact matching qualified name)
for (Field f : fields) {
if (f.equals(field)) {
return (Field) f;
}
}
// In case no exact match was found, return the first field with matching name
String name = field.getName();
for (Field f1 : fields) {
if (f1.getName().equals(name)) {
return (Field) f1;
}
}
return null;
}
@Override
public final Field field(String name) {
if (name == null) {
return null;
}
for (Field f : fields) {
if (f.getName().equals(name)) {
return f;
}
}
return null;
}
@Override
public final Field field(int index) {
if (index >= 0 && index < fields.length) {
return fields[index];
}
return null;
}
@Override
public final Field[] fields() {
return fields;
}
@Override
public final Field[] fields(Field... f) {
Field[] result = new Field[f.length];
for (int i = 0; i < result.length; i++) {
result[i] = field(f[i]);
}
return result;
}
@Override
public final Field[] fields(String... f) {
Field[] result = new Field[f.length];
for (int i = 0; i < result.length; i++) {
result[i] = field(f[i]);
}
return result;
}
@Override
public final Field[] fields(int... f) {
Field[] result = new Field[f.length];
for (int i = 0; i < result.length; i++) {
result[i] = field(f[i]);
}
return result;
}
@Override
public final int indexOf(Field field) {
// Get an exact match, or a field with a similar name
Field compareWith = field(field);
if (compareWith != null) {
int size = fields.length;
for (int i = 0; i < size; i++) {
if (fields[i].equals(compareWith))
return i;
}
}
return -1;
}
@Override
public final int indexOf(String fieldName) {
return indexOf(field(fieldName));
}
@Override
public final Class[] types() {
int size = fields.length;
Class[] result = new Class[size];
for (int i = 0; i < size; i++) {
result[i] = field(i).getType();
}
return result;
}
@Override
public final Class type(int fieldIndex) {
return fieldIndex >= 0 && fieldIndex < size() ? field(fieldIndex).getType() : null;
}
@Override
public final Class type(String fieldName) {
return type(indexOrFail(this, fieldName));
}
@Override
public final DataType[] dataTypes() {
int size = fields.length;
DataType[] result = new DataType[size];
for (int i = 0; i < size; i++) {
result[i] = field(i).getDataType();
}
return result;
}
@Override
public final DataType dataType(int fieldIndex) {
return fieldIndex >= 0 && fieldIndex < size() ? field(fieldIndex).getDataType() : null;
}
@Override
public final DataType dataType(String fieldName) {
return dataType(indexOrFail(this, fieldName));
}
final int[] indexesOf(Field... f) {
int[] result = new int[f.length];
for (int i = 0; i < f.length; i++) {
result[i] = indexOrFail(this, f[i]);
}
return result;
}
final int[] indexesOf(String... fieldNames) {
int[] result = new int[fieldNames.length];
for (int i = 0; i < fieldNames.length; i++) {
result[i] = indexOrFail(this, fieldNames[i]);
}
return result;
}
@Override
public final void accept(Context ctx) {
new QueryPartList>(fields).accept(ctx);
}
@Override
public final Clause[] clauses(Context ctx) {
return null;
}
// -------------------------------------------------------------------------
// XXX: List-like API
// -------------------------------------------------------------------------
final void add(Field f) {
Field[] result = new Field[fields.length + 1];
System.arraycopy(fields, 0, result, 0, fields.length);
result[fields.length] = f;
fields = result;
}
}