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// distributed with this work for additional information

// regarding copyright ownership. The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// 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.

package com.cloud.utils.db;

import java.util.ArrayList;

import java.util.List;

/**

* Where implements any list of search conditions.

*

*/

public class Where<T, K> implements FirstWhere<T, K>, NextWhere<T, K> {

QueryBuilder<T, K> _builder;

List<Object> _conditions = new ArrayList<Object>();

protected Where(QueryBuilder<T, K> builder) {

_builder = builder;

}

@Override

public Condition<T, K> field(Object useless, String as) {

Attribute attr = _builder.getSpecifiedAttribute();

Condition<T, K> cond = new Condition<T, K>(this, attr, as);

_conditions.add(cond);

return cond;

}

@Override

public Where<T, K> and() {

_conditions.add(" (");

return this;

}

@Override

public Where<T, K> or() {

_conditions.add(" OR ");

return this;

}

@Override

public NextWhere<T, K> not() {

_conditions.add(" NOT ");

return this;

}

@Override

public NextWhere<T, K> text(String text, String... paramNames) {

assert ((paramNames.length == 0 && !text.contains("?")) || (text.matches("\\?.*{" + paramNames.length + "}")));

// TODO Auto-generated method stub

return null;

}

@Override

public Condition<T, K> field(Object useless) {

return field(useless, null);

}

@Override

public FirstWhere<T, K> op() {

_conditions.add("(");

return this;

}

@Override

public void done() {

}

}