Android Open Source - SORM Indexer

From Project

Back to project page SORM.

License

The source code is released under:

MIT License

If you think the Android project SORM listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.annotation.core;
//ww w . j  a v  a 2s .c o  m
import java.lang.reflect.Field;

import com.annotation.entity.Sqlable;
import com.annotation.utils.NameBuilder;
import com.annotation.utils.ReflectionUtils;
import com.annotation.utils.SqlUtils;
import com.annotation.utils._;

public class Indexer implements Sqlable {
  private String _indexName;
  private String _talbe;
  private boolean _unique = false;
  private StringBuffer _indexedColumns;// index name equals column name
  private String _expression = null;

  public Indexer() {
    _indexedColumns = new StringBuffer();
  }

  public Indexer unique(boolean isUnique) {
    _unique = isUnique;
    return this;
  }

  public Indexer from(Class<?> cls) {
    _talbe = ReflectionUtils.getTableName(cls);
    _indexName = NameBuilder.buildIndex(_talbe);
    Field[] fields = SqlUtils.getIndexField(cls);
    for (Field f : fields)  
        _indexedColumns.append(f.getName()).append(",");
    if (_indexedColumns.length() > 0)
      _indexedColumns.deleteCharAt(_indexedColumns.length() - 1);
    return this;
  }

  public Indexer where(String expression) {
    _expression = expression;
    return this;
  }

  @Override
  public String build() {
    if(_indexedColumns == null || _indexedColumns.length() == 0){
      return null;
    }
    StringBuffer builder = new StringBuffer();
    if (_unique) {
      builder.append("Create Unique Index ");
    } else {
      builder.append("Create Index ");
    }
    builder.append(_indexName).append(" on ").append(_talbe);
    builder.append(" (").append(_indexedColumns).append(") ");
    if (!_.isEmpty(_expression))
      builder.append(" Where ").append(_expression);
    return builder.toString();
  }

}

Java Source Code List