Android Open Source - android-webview-example Column Extractor

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License

The source code is released under:

Apache License

Java Source Code

package com.significantfiles.android.sqlite.create;
/*from w ww . j a v  a2s.c  o  m*/
import java.lang.reflect.Method;

import com.significantfiles.android.provider.table.OrderBy;
import com.significantfiles.android.provider.table.constraint.IsPrimaryKey;

public class ColumnExtractor {

  private static final String PRIMARY_KEY = " PRIMARY KEY ";

  private Method method;

  public void set(final Method method) {
    this.method = method;
  }

  /**
   * Build primary-constraint for the CREATE-Table query.
   * 
   * @return
   */
  public String getPrimaryKeyConstraint() {
    final IsPrimaryKey field = this.method
        .getAnnotation(IsPrimaryKey.class);

    if (field == null)
      return "";

    final StringBuilder buffer = new StringBuilder(128);

    final boolean hasName = (field.name().length() > 0);

    if (hasName) {
      buffer.append(" CONSTRAINT ");
      buffer.append(field.name());
      buffer.append(" ");
    }

    buffer.append(PRIMARY_KEY);

    final OrderBy order = field.order();

    switch (order) {
    case DESC:
      buffer.append(" DESC ");
      break;
    case ASC:
      buffer.append(" ASC ");
      break;
    }
    
    final String msg = field.msg().trim();
    if( msg.length() > 0) {
      buffer.append( " " );
      buffer.append( msg );
      buffer.append( " " );
    }
    
    if (field.autoIncrement()) {
      buffer.append(" AUTOINCREMENT ");
    }

    return buffer.toString();
  }

  public String getName() {
    return this.method.getName();
  }

  public String getColumnType() {
    final Class<?> rtype = this.method.getReturnType();

    return rtype.getSimpleName();
  }
  
}

Java Source Code List

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